docs: restore docs for the view

Add support of changes generation. Changes will be generated (unless explicitly asked not to) automatically during check process (i.e. `repo-update --dry-run` and aliases) and uploaded to the remote server. Changes can be reviewed either by web interface or by special subcommands.

Changes will be automatically cleared during next successful build

docs/ahriman.application.application.rst

@@ -1,6 +1,14 @@
 ahriman.application.application package
 =======================================
 
+Subpackages
+-----------
+
+.. toctree::
+   :maxdepth: 4
+
+   ahriman.application.application.workers
+
 Submodules
 ----------
 

docs/ahriman.application.application.workers.rst

@@ -0,0 +1,37 @@
+ahriman.application.application.workers package
+===============================================
+
+Submodules
+----------
+
+ahriman.application.application.workers.local\_updater module
+-------------------------------------------------------------
+
+.. automodule:: ahriman.application.application.workers.local_updater
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
+ahriman.application.application.workers.remote\_updater module
+--------------------------------------------------------------
+
+.. automodule:: ahriman.application.application.workers.remote_updater
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
+ahriman.application.application.workers.updater module
+------------------------------------------------------
+
+.. automodule:: ahriman.application.application.workers.updater
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
+Module contents
+---------------
+
+.. automodule:: ahriman.application.application.workers
+   :members:
+   :no-undoc-members:
+   :show-inheritance:

docs/ahriman.application.handlers.rst

@@ -20,6 +20,14 @@ ahriman.application.handlers.backup module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.application.handlers.change module
+------------------------------------------
+
+.. automodule:: ahriman.application.handlers.change
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 ahriman.application.handlers.clean module
 -----------------------------------------
 

docs/ahriman.core.database.migrations.rst

@@ -100,6 +100,14 @@ ahriman.core.database.migrations.m011\_repository\_name module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.core.database.migrations.m012\_last\_commit\_sha module
+---------------------------------------------------------------
+
+.. automodule:: ahriman.core.database.migrations.m012_last_commit_sha
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 Module contents
 ---------------
 

docs/ahriman.core.database.operations.rst

@@ -20,6 +20,14 @@ ahriman.core.database.operations.build\_operations module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.core.database.operations.changes\_operations module
+-----------------------------------------------------------
+
+.. automodule:: ahriman.core.database.operations.changes_operations
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 ahriman.core.database.operations.logs\_operations module
 --------------------------------------------------------
 

docs/ahriman.core.formatters.rst

@@ -20,6 +20,14 @@ ahriman.core.formatters.build\_printer module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.core.formatters.changes\_printer module
+-----------------------------------------------
+
+.. automodule:: ahriman.core.formatters.changes_printer
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 ahriman.core.formatters.configuration\_paths\_printer module
 ------------------------------------------------------------
 

docs/ahriman.core.repository.rst

@@ -20,6 +20,14 @@ ahriman.core.repository.executor module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.core.repository.package\_info module
+--------------------------------------------
+
+.. automodule:: ahriman.core.repository.package_info
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 ahriman.core.repository.repository module
 -----------------------------------------
 

docs/ahriman.models.rst

@@ -36,6 +36,14 @@ ahriman.models.build\_status module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.models.changes module
+-----------------------------
+
+.. automodule:: ahriman.models.changes
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 ahriman.models.context\_key module
 ----------------------------------
 
@@ -244,6 +252,14 @@ ahriman.models.waiter module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.models.worker module
+----------------------------
+
+.. automodule:: ahriman.models.worker
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 Module contents
 ---------------
 

docs/ahriman.web.schemas.rst

@@ -20,6 +20,22 @@ ahriman.web.schemas.auth\_schema module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.web.schemas.build\_options\_schema module
+-------------------------------------------------
+
+.. automodule:: ahriman.web.schemas.build_options_schema
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
+ahriman.web.schemas.changes\_schema module
+------------------------------------------
+
+.. automodule:: ahriman.web.schemas.changes_schema
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 ahriman.web.schemas.counters\_schema module
 -------------------------------------------
 

docs/ahriman.web.views.rst

@@ -38,6 +38,14 @@ ahriman.web.views.static module
    :no-undoc-members:
    :show-inheritance:
 
+ahriman.web.views.status\_view\_guard module
+--------------------------------------------
+
+.. automodule:: ahriman.web.views.status_view_guard
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 Module contents
 ---------------
 

docs/ahriman.web.views.v1.status.rst

@@ -4,6 +4,14 @@ ahriman.web.views.v1.status package
 Submodules
 ----------
 
+ahriman.web.views.v1.status.changes module
+------------------------------------------
+
+.. automodule:: ahriman.web.views.v1.status.changes
+   :members:
+   :no-undoc-members:
+   :show-inheritance:
+
 ahriman.web.views.v1.status.logs module
 ---------------------------------------
 

docs/configuration.rst

@@ -86,6 +86,7 @@ Build related configuration. Group name can refer to architecture, e.g. ``build:
 * ``triggers`` - list of ``ahriman.core.triggers.Trigger`` class implementation (e.g. ``ahriman.core.report.ReportTrigger ahriman.core.upload.UploadTrigger``) which will be loaded and run at the end of processing, space separated list of strings, optional. You can also specify triggers by their paths, e.g. ``/usr/lib/python3.10/site-packages/ahriman/core/report/report.py.ReportTrigger``. Triggers are run in the order of mention.
 * ``triggers_known`` - optional list of ``ahriman.core.triggers.Trigger`` class implementations which are not run automatically and used only for trigger discovery and configuration validation.
 * ``vcs_allowed_age`` - maximal age in seconds of the VCS packages before their version will be updated with its remote source, integer, optional, default ``604800``.
+* ``workers`` - list of worker nodes addresses used for build process, space separated list of strings, optional. Each worker address must be valid and reachable url, e.g. ``https://10.0.0.1:8080``. If none set, the build process will be run on the current node.
 
 ``repository`` group
 --------------------
@@ -128,6 +129,7 @@ Web server settings. If any of ``host``/``port`` is not set, web integration wil
 * ``index_url`` - full url of the repository index page, string, optional.
 * ``max_body_size`` - max body size in bytes to be validated for archive upload, integer, optional. If not set, validation will be disabled.
 * ``port`` - port to bind, integer, optional.
+* ``service_only`` - disable status routes (including logs), boolean, optional, default ``no``.
 * ``static_path`` - path to directory with static files, string, required.
 * ``templates`` - path to templates directories, space separated list of strings, required.
 * ``unix_socket`` - path to the listening unix socket, string, optional. If set, server will create the socket on the specified address which can (and will) be used by application. Note, that unlike usual host/port configuration, unix socket allows to perform requests without authorization.

docs/faq.rst

@@ -114,8 +114,8 @@ But for some cases you would like to have multiple different reports with the sa
    type = email
    ...
 
-How do I add new package
-^^^^^^^^^^^^^^^^^^^^^^^^
+How to add new package
+^^^^^^^^^^^^^^^^^^^^^^
 
 .. code-block:: shell
 
@@ -237,6 +237,27 @@ Normally the service handles VCS packages correctly, however it requires additio
 
    pacman -S breezy darcs mercurial subversion
 
+How to review changes before build
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+In this scenario, the update process must be separated to several stages. First, it is required to check updates:
+
+.. code-block:: shell
+
+   sudo -u ahriman ahriman repo-check
+
+During the check process, the service will generate changes from the last known commit and will send it to remote service. In order to verify source files changes, the web interface or special subcommand can be used:
+
+.. code-block:: shell
+
+   ahriman package-changes ahriman
+
+After validation, the operator can run update process with approved list of packages, e.g.:
+
+.. code-block:: shell
+
+   sudo -u ahriman ahriman repo-update ahriman
+
 How to remove package
 ^^^^^^^^^^^^^^^^^^^^^
 
@@ -1001,6 +1022,119 @@ This action must be done in two steps:
 #. Remove package on worker.
 #. Remove package on master node.
 
+Delegate builds to remote workers
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+This setup heavily uses upload feature described above and, in addition, also delegates build process automatically to build machines. Same as above, there must be at least two instances available (``master`` and ``worker``), however, all ``worker`` nodes must be run in the web service mode.
+
+Master node configuration
+"""""""""""""""""""""""""
+
+In addition to the configuration above, the worker list must be defined in configuration file (``build.workers`` option), i.e.:
+
+.. code-block:: ini
+
+   [build]
+   workers = https://worker1.example.com https://worker2.example.com
+
+   [web]
+   enable_archive_upload = yes
+   wait_timeout = 0
+
+In the example above, ``https://worker1.example.com`` and ``https://worker2.example.com`` are remote ``worker`` node addresses available for ``master`` node.
+
+In case if authentication is required (which is recommended way to setup it), it can be set by using ``status`` section as usual.
+
+Worker nodes configuration
+""""""""""""""""""""""""""
+
+It is required to point to the master node repository, otherwise internal dependencies will not be handled correctly. In order to do so, the ``--server`` argument (or ``AHRIMAN_REPOSITORY_SERVER`` environment variable for docker images) can be used.
+
+Also, in case if authentication is enabled, the same user with the same password must be created for all workers.
+
+It is also recommended to set ``web.wait_timeout`` to infinite in case of multiple conflicting runs and ``service_only`` to ``yes`` in order to disable status endpoints.
+
+Other settings are the same as mentioned above.
+
+Triple node minimal docker example
+""""""""""""""""""""""""""""""""""
+
+In this example, all instances are run on the same machine with address ``172.17.0.1`` with ports available outside of container. Master node config (``master.ini``) as:
+
+.. code-block:: ini
+
+   [auth]
+   target = mapping
+
+   [status]
+   username = builder-user
+   password = very-secure-password
+
+   [build]
+   workers = http://172.17.0.1:8081 http://172.17.0.1:8082
+
+   [web]
+   enable_archive_upload = yes
+   wait_timeout = 0
+
+Command to run master node:
+
+.. code-block:: shell
+
+   docker run --privileged -p 8080:8080 -e AHRIMAN_PORT=8080 -v master.ini:/etc/ahriman.ini.d/overrides.ini arcan1s/ahriman:latest web
+
+Worker nodes (applicable for all workers) config (``worker.ini``) as:
+
+.. code-block:: ini
+
+   [auth]
+   target = mapping
+
+   [status]
+   address = http://172.17.0.1:8080
+   username = builder-user
+   password = very-secure-password
+
+   [upload]
+   target = remote-service
+
+   [remote-service]
+
+   [report]
+   target = remote-call
+
+   [remote-call]
+   manual = yes
+   wait_timeout = 0
+
+   [web]
+   service_only = yes
+
+   [build]
+   triggers = ahriman.core.upload.UploadTrigger ahriman.core.report.ReportTrigger
+
+Command to run worker nodes (considering there will be two workers, one is on ``8081`` port and other is on ``8082``):
+
+.. code-block:: ini
+
+   docker run --privileged -p 8081:8081 -e AHRIMAN_PORT=8081 -v worker.ini:/etc/ahriman.ini.d/overrides.ini arcan1s/ahriman:latest web
+   docker run --privileged -p 8082:8082 -e AHRIMAN_PORT=8082 -v worker.ini:/etc/ahriman.ini.d/overrides.ini arcan1s/ahriman:latest web
+
+Unlike the previous setup, it doesn't require to mount repository root for ``worker`` nodes, because ``worker`` nodes don't use it anyway.
+
+Addition of new package, package removal, repository update
+"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+In all scenarios, update process must be run only on ``master`` node. Unlike the setup described above, automatic update must be enabled only for ``master`` node also.
+
+Known limitations
+"""""""""""""""""
+
+* Workers don't support local packages. However, it is possible to build custom packages by providing sources by using ``ahriman.core.gitremote.RemotePullTrigger`` trigger.
+* No dynamic nodes discovery. In case if one of worker nodes is unavailable, the build process will fail.
+* No pkgrel bump on conflicts. Well, it works, however, it isn't guaranteed.
+* The identical user must be created for all workers. However, the ``master`` node user can be different from this one.
+
 Maintenance packages
 --------------------
 

package/lib/systemd/system/ahriman@.service

@@ -2,6 +2,6 @@
 Description=ArcH linux ReposItory MANager (%i)
 
 [Service]
-ExecStart=/usr/bin/ahriman --repository-id "%I" repo-update --refresh
+ExecStart=/usr/bin/ahriman --repository-id "%I" repo-update --no-changes --refresh
 User=ahriman
 Group=ahriman

package/share/ahriman/templates/build-status/alerts.jinja2

@@ -1,7 +1,7 @@
 <script>
     const alertPlaceholder = $("#alert-placeholder");
 
-    function createAlert(title, message, clz) {
+    function createAlert(title, message, clz, action) {
         const wrapper = document.createElement("div");
         wrapper.classList.add("toast", clz);
         wrapper.role = "alert";
@@ -23,7 +23,7 @@
         const toast = new bootstrap.Toast(wrapper);
         wrapper.addEventListener("hidden.bs.toast", () => {
             wrapper.remove();  // bootstrap doesn't remove elements
-            reload();
+            (action || reload)();
         });
         toast.show();
     }
@@ -38,8 +38,8 @@
         createAlert(title, description(details), "text-bg-danger");
     }
 
-    function showSuccess(title, description) {
-        createAlert(title, description, "text-bg-success");
+    function showSuccess(title, description, action) {
+        createAlert(title, description, "text-bg-success", action);
     }
 
 </script>

package/share/ahriman/templates/build-status/login-modal.jinja2

@@ -1,7 +1,7 @@
 <div id="login-modal" tabindex="-1" role="dialog" class="modal fade">
     <div class="modal-dialog" role="document">
         <div class="modal-content">
-            <form action="/api/v1/login" method="post">
+            <form id="login-form" onsubmit="return false">
                 <div class="modal-header">
                     <h4 class="modal-title">Login</h4>
                     <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="close"></button>
@@ -26,7 +26,7 @@
                     </div>
                 </div>
                 <div class="modal-footer">
-                    <button class="btn btn-primary"><i class="bi bi-person"></i> login</button>
+                    <button type="submit" class="btn btn-primary" onclick="login()"><i class="bi bi-person"></i> login</button>
                 </div>
             </form>
         </div>
@@ -34,16 +34,45 @@
 </div>
 
 <script>
-    const passwordInput = $("#login-password");
+    const loginModal = $("#login-modal");
+    const loginForm = $("#login-form");
+    loginModal.on("hidden.bs.modal", () => {
+        loginForm.trigger("reset");
+    });
+
+    const loginPasswordInput = $("#login-password");
+    const loginUsernameInput = $("#login-username");
     const showHidePasswordButton = $("#login-show-hide-password-button");
 
+    function login() {
+        const password = loginPasswordInput.val();
+        const username = loginUsernameInput.val();
+
+        if (username && password) {
+            $.ajax({
+                url: "/api/v1/login",
+                data: JSON.stringify({username: username, password: password}),
+                type: "POST",
+                contentType: "application/json",
+                success: _ => {
+                    loginModal.modal("hide");
+                    showSuccess("Logged in", `Successfully logged in as ${username}`, () => location.href = "/");
+                },
+                error: (jqXHR, _, errorThrown) => {
+                    const message = _ => `Could not login as ${username}`;
+                    showFailure("Login error", message, jqXHR, errorThrown);
+                },
+            });
+        }
+    }
+
     function showPassword() {
-        if (passwordInput.attr("type") === "password") {
-            passwordInput.attr("type", "text");
+        if (loginPasswordInput.attr("type") === "password") {
+            loginPasswordInput.attr("type", "text");
             showHidePasswordButton.removeClass("bi-eye");
             showHidePasswordButton.addClass("bi-eye-slash");
         } else {
-            passwordInput.attr("type", "password");
+            loginPasswordInput.attr("type", "password");
             showHidePasswordButton.removeClass("bi-eye-slash");
             showHidePasswordButton.addClass("bi-eye");
         }

package/share/ahriman/templates/build-status/package-info-modal.jinja2

@@ -36,13 +36,27 @@
 
                 <hr class="col-12">
 
-                <h3>Environment variables</h3>
-                <div id="package-info-variables-div" class="form-group row"></div>
+                <div id="package-info-variables-block" hidden>
+                    <h3>Environment variables</h3>
+                    <div id="package-info-variables-div" class="form-group row"></div>
 
-                <hr class="col-12">
+                    <hr class="col-12">
+                </div>
 
-                <h3>Build logs</h3>
-                <pre class="language-logs"><samp id="package-info-logs-input" class="pre-scrollable language-logs"></samp><button id="package-info-logs-copy-button" type="button" class="btn language-logs" onclick="copyLogs()"><i class="bi bi-clipboard"></i> copy</button></pre>
+                <nav>
+                    <div class="nav nav-tabs" role="tablist">
+                        <button id="package-info-logs-button" class="nav-link active" data-bs-toggle="tab" data-bs-target="#package-info-logs" type="button" role="tab" aria-controls="package-info-logs" aria-selected="true"><h3>Build logs</h3></button>
+                        <button id="package-info-changes-button" class="nav-link" data-bs-toggle="tab" data-bs-target="#package-info-changes" type="button" role="tab" aria-controls="package-info-changes" aria-selected="false"><h3>Changes</h3></button>
+                    </div>
+                </nav>
+                <div class="tab-content" id="nav-tabContent">
+                    <div id="package-info-logs" class="tab-pane fade show active" role="tabpanel" aria-labelledby="package-info-logs-button" tabindex="0">
+                        <pre class="language-console"><code id="package-info-logs-input" class="pre-scrollable language-console"></code><button id="package-info-logs-copy-button" type="button" class="btn language-console" onclick="copyLogs()"><i class="bi bi-clipboard"></i> copy</button></pre>
+                    </div>
+                    <div id="package-info-changes" class="tab-pane fade" role="tabpanel" aria-labelledby="package-info-changes-button" tabindex="0">
+                        <pre class="language-diff"><code id="package-info-changes-input" class="pre-scrollable language-diff"></code><button id="package-info-changes-copy-button" type="button" class="btn language-diff" onclick="copyChanges()"><i class="bi bi-clipboard"></i> copy</button></pre>
+                    </div>
+                </div>
             </div>
             <div class="modal-footer">
                 <button id="package-info-update-button" type="submit" class="btn btn-success" onclick="packageInfoUpdate()" data-bs-dismiss="modal" hidden><i class="bi bi-play"></i><span class="d-none d-sm-inline"> update</span></button>
@@ -68,9 +82,11 @@
         packageInfoUpstreamUrl.empty();
         packageInfoVersion.empty();
 
+        packageInfoVariablesBlock.attr("hidden", true);
         packageInfoVariablesDiv.empty();
 
         packageInfoLogsInput.empty();
+        packageInfoChangesInput.empty();
 
         packageInfoModal.trigger("reset");
 
@@ -80,6 +96,9 @@
     const packageInfoLogsInput = $("#package-info-logs-input");
     const packageInfoLogsCopyButton = $("#package-info-logs-copy-button");
 
+    const packageInfoChangesInput = $("#package-info-changes-input");
+    const packageInfoChangesCopyButton = $("#package-info-changes-copy-button");
+
     const packageInfoAurUrl = $("#package-info-aur-url");
     const packageInfoDepends = $("#package-info-depends");
     const packageInfoGroups = $("#package-info-groups");
@@ -89,8 +108,14 @@
     const packageInfoUpstreamUrl = $("#package-info-upstream-url");
     const packageInfoVersion = $("#package-info-version");
 
+    const packageInfoVariablesBlock = $("#package-info-variables-block");
     const packageInfoVariablesDiv = $("#package-info-variables-div");
 
+    async function copyChanges() {
+        const changes = packageInfoChangesInput.text();
+        await copyToClipboard(changes, packageInfoChangesCopyButton);
+    }
+
     async function copyLogs() {
         const logs = packageInfoLogsInput.text();
         await copyToClipboard(logs, packageInfoLogsCopyButton);
@@ -142,6 +167,24 @@
         packageInfoVariablesDiv.append(variableInput);
     }
 
+    function loadChanges(packageBase, onFailure) {
+        $.ajax({
+            url: `/api/v1/packages/${packageBase}/changes`,
+            data: {
+                architecture: repository.architecture,
+                repository: repository.repository,
+            },
+            type: "GET",
+            dataType: "json",
+            success: response => {
+                const changes = response.changes;
+                packageInfoChangesInput.text(changes || "");
+                packageInfoChangesInput.map((_, el) => hljs.highlightElement(el));
+            },
+            error: onFailure,
+        });
+    }
+
     function loadLogs(packageBase, onFailure) {
         $.ajax({
             url: `/api/v2/packages/${packageBase}/logs`,
@@ -156,6 +199,7 @@
                     return `[${new Date(1000 * log_record.created).toISOString()}] ${log_record.message}`;
                 });
                 packageInfoLogsInput.text(logs.join("\n"));
+                packageInfoLogsInput.map((_, el) => hljs.highlightElement(el));
             },
             error: onFailure,
         });
@@ -228,6 +272,7 @@
             success: response => {
                 packageInfoVariablesDiv.empty();
                 response.map(patch => insertVariable(packageBase, patch));
+                packageInfoVariablesBlock.attr("hidden", response.length === 0);
             },
             error: onFailure,
         });
@@ -260,6 +305,7 @@
         loadPackage(packageBase, onFailure);
         loadPatches(packageBase, onFailure);
         loadLogs(packageBase, onFailure);
+        loadChanges(packageBase, onFailure)
 
         if (isPackageBaseSet) packageInfoModal.modal("show");
     }

package/share/ahriman/templates/utils/bootstrap-scripts.jinja2

@@ -15,6 +15,8 @@
 <script src="https://cdn.jsdelivr.net/npm/bootstrap-table@1.22.1/dist/extensions/resizable/bootstrap-table-resizable.js" integrity="sha384-wd8Vc6Febikdnsnk9vthRWRvMwffw246vhqiqNO3aSNe1maTEA07Vh3zAQiSyDji" crossorigin="anonymous" type="application/javascript"></script>
 <script src="https://cdn.jsdelivr.net/npm/bootstrap-table@1.22.1/dist/extensions/filter-control/bootstrap-table-filter-control.js" integrity="sha384-NIqcjpr/3eZI1iNzz7hgT5rgp70qFUzkZffeCgVva9gi80B5vqcm7gn+8QvlWxko" crossorigin="anonymous" type="application/javascript"></script>
 
+<script src="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@11.9.0/build/highlight.min.js" integrity="sha384-F/bZzf7p3Joyp5psL90p/p89AZJsndkSoGwRpXcZhleCWhd8SnRuoYo4d0yirjJp" crossorigin="anonymous" type="application/javascript"></script>
+
 <script>
     async function copyToClipboard(text, button) {
         if (navigator.clipboard === undefined) {

package/share/ahriman/templates/utils/style.jinja2

@@ -11,6 +11,8 @@
 
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/daterangepicker@3.1.0/daterangepicker.css" integrity="sha384-zLkQsiLfAQqGeIJeKLC+rcCR1YoYaQFLCL7cLDUoKE1ajKJzySpjzWGfYS2vjSG+" crossorigin="anonymous" type="text/css">
 
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@11.9.0/build/styles/github.min.css" integrity="sha384-eFTL69TLRZTkNfYZOLM+G04821K1qZao/4QLJbet1pP4tcF+fdXq/9CdqAbWRl/L" crossorigin="anonymous" type="text/css">
+
 <style>
     .pre-scrollable {
         display: block;

package/share/bash-completion/completions/_ahriman

@@ -1,6 +1,6 @@
 # AUTOMATICALLY GENERATED by `shtab`
 
-_shtab_ahriman_subparsers=('aur-search' 'search' 'help-commands-unsafe' 'help' 'help-updates' 'help-version' 'version' 'package-add' 'add' 'package-update' 'package-remove' 'remove' 'package-status' 'status' 'package-status-remove' 'package-status-update' 'status-update' 'patch-add' 'patch-list' 'patch-remove' 'patch-set-add' 'repo-backup' 'repo-check' 'check' 'repo-create-keyring' 'repo-create-mirrorlist' 'repo-daemon' 'daemon' 'repo-rebuild' 'rebuild' 'repo-remove-unknown' 'remove-unknown' 'repo-report' 'report' 'repo-restore' 'repo-sign' 'sign' 'repo-status-update' 'repo-sync' 'sync' 'repo-tree' 'repo-triggers' 'repo-update' 'update' 'service-clean' 'clean' 'repo-clean' 'service-config' 'config' 'repo-config' 'service-config-validate' 'config-validate' 'repo-config-validate' 'service-key-import' 'key-import' 'service-repositories' 'service-run' 'run' 'service-setup' 'init' 'repo-init' 'repo-setup' 'setup' 'service-shell' 'shell' 'service-tree-migrate' 'user-add' 'user-list' 'user-remove' 'web')
+_shtab_ahriman_subparsers=('aur-search' 'search' 'help-commands-unsafe' 'help' 'help-updates' 'help-version' 'version' 'package-add' 'add' 'package-update' 'package-changes' 'package-changes-remove' 'package-remove' 'remove' 'package-status' 'status' 'package-status-remove' 'package-status-update' 'status-update' 'patch-add' 'patch-list' 'patch-remove' 'patch-set-add' 'repo-backup' 'repo-check' 'check' 'repo-create-keyring' 'repo-create-mirrorlist' 'repo-daemon' 'daemon' 'repo-rebuild' 'rebuild' 'repo-remove-unknown' 'remove-unknown' 'repo-report' 'report' 'repo-restore' 'repo-sign' 'sign' 'repo-status-update' 'repo-sync' 'sync' 'repo-tree' 'repo-triggers' 'repo-update' 'update' 'service-clean' 'clean' 'repo-clean' 'service-config' 'config' 'repo-config' 'service-config-validate' 'config-validate' 'repo-config-validate' 'service-key-import' 'key-import' 'service-repositories' 'service-run' 'run' 'service-setup' 'init' 'repo-init' 'repo-setup' 'setup' 'service-shell' 'shell' 'service-tree-migrate' 'user-add' 'user-list' 'user-remove' 'web')
 
 _shtab_ahriman_option_strings=('-h' '--help' '-a' '--architecture' '-c' '--configuration' '--force' '-l' '--lock' '--log-handler' '-q' '--quiet' '--report' '--no-report' '-r' '--repository' '--unsafe' '-V' '--version' '--wait-timeout')
 _shtab_ahriman_aur_search_option_strings=('-h' '--help' '-e' '--exit-code' '--info' '--no-info' '--sort-by')
@@ -13,6 +13,8 @@ _shtab_ahriman_version_option_strings=('-h' '--help')
 _shtab_ahriman_package_add_option_strings=('-h' '--help' '--dependencies' '--no-dependencies' '-e' '--exit-code' '--increment' '--no-increment' '-n' '--now' '-y' '--refresh' '-s' '--source' '-u' '--username' '-v' '--variable')
 _shtab_ahriman_add_option_strings=('-h' '--help' '--dependencies' '--no-dependencies' '-e' '--exit-code' '--increment' '--no-increment' '-n' '--now' '-y' '--refresh' '-s' '--source' '-u' '--username' '-v' '--variable')
 _shtab_ahriman_package_update_option_strings=('-h' '--help' '--dependencies' '--no-dependencies' '-e' '--exit-code' '--increment' '--no-increment' '-n' '--now' '-y' '--refresh' '-s' '--source' '-u' '--username' '-v' '--variable')
+_shtab_ahriman_package_changes_option_strings=('-h' '--help' '-e' '--exit-code')
+_shtab_ahriman_package_changes_remove_option_strings=('-h' '--help')
 _shtab_ahriman_package_remove_option_strings=('-h' '--help')
 _shtab_ahriman_remove_option_strings=('-h' '--help')
 _shtab_ahriman_package_status_option_strings=('-h' '--help' '--ahriman' '-e' '--exit-code' '--info' '--no-info' '-s' '--status')
@@ -25,12 +27,12 @@ _shtab_ahriman_patch_list_option_strings=('-h' '--help' '-e' '--exit-code' '-v'
 _shtab_ahriman_patch_remove_option_strings=('-h' '--help' '-v' '--variable')
 _shtab_ahriman_patch_set_add_option_strings=('-h' '--help' '-t' '--track')
 _shtab_ahriman_repo_backup_option_strings=('-h' '--help')
-_shtab_ahriman_repo_check_option_strings=('-h' '--help' '-e' '--exit-code' '--vcs' '--no-vcs' '-y' '--refresh')
-_shtab_ahriman_check_option_strings=('-h' '--help' '-e' '--exit-code' '--vcs' '--no-vcs' '-y' '--refresh')
+_shtab_ahriman_repo_check_option_strings=('-h' '--help' '--changes' '--no-changes' '-e' '--exit-code' '--vcs' '--no-vcs' '-y' '--refresh')
+_shtab_ahriman_check_option_strings=('-h' '--help' '--changes' '--no-changes' '-e' '--exit-code' '--vcs' '--no-vcs' '-y' '--refresh')
 _shtab_ahriman_repo_create_keyring_option_strings=('-h' '--help')
 _shtab_ahriman_repo_create_mirrorlist_option_strings=('-h' '--help')
-_shtab_ahriman_repo_daemon_option_strings=('-h' '--help' '-i' '--interval' '--aur' '--no-aur' '--dependencies' '--no-dependencies' '--local' '--no-local' '--manual' '--no-manual' '--vcs' '--no-vcs' '-y' '--refresh')
-_shtab_ahriman_daemon_option_strings=('-h' '--help' '-i' '--interval' '--aur' '--no-aur' '--dependencies' '--no-dependencies' '--local' '--no-local' '--manual' '--no-manual' '--vcs' '--no-vcs' '-y' '--refresh')
+_shtab_ahriman_repo_daemon_option_strings=('-h' '--help' '-i' '--interval' '--aur' '--no-aur' '--changes' '--no-changes' '--dependencies' '--no-dependencies' '--dry-run' '--local' '--no-local' '--manual' '--no-manual' '--vcs' '--no-vcs' '-y' '--refresh')
+_shtab_ahriman_daemon_option_strings=('-h' '--help' '-i' '--interval' '--aur' '--no-aur' '--changes' '--no-changes' '--dependencies' '--no-dependencies' '--dry-run' '--local' '--no-local' '--manual' '--no-manual' '--vcs' '--no-vcs' '-y' '--refresh')
 _shtab_ahriman_repo_rebuild_option_strings=('-h' '--help' '--depends-on' '--dry-run' '--from-database' '--increment' '--no-increment' '-e' '--exit-code' '-s' '--status' '-u' '--username')
 _shtab_ahriman_rebuild_option_strings=('-h' '--help' '--depends-on' '--dry-run' '--from-database' '--increment' '--no-increment' '-e' '--exit-code' '-s' '--status' '-u' '--username')
 _shtab_ahriman_repo_remove_unknown_option_strings=('-h' '--help' '--dry-run')
@@ -45,8 +47,8 @@ _shtab_ahriman_repo_sync_option_strings=('-h' '--help')
 _shtab_ahriman_sync_option_strings=('-h' '--help')
 _shtab_ahriman_repo_tree_option_strings=('-h' '--help' '-p' '--partitions')
 _shtab_ahriman_repo_triggers_option_strings=('-h' '--help')
-_shtab_ahriman_repo_update_option_strings=('-h' '--help' '--aur' '--no-aur' '--dependencies' '--no-dependencies' '--dry-run' '-e' '--exit-code' '--increment' '--no-increment' '--local' '--no-local' '--manual' '--no-manual' '-u' '--username' '--vcs' '--no-vcs' '-y' '--refresh')
-_shtab_ahriman_update_option_strings=('-h' '--help' '--aur' '--no-aur' '--dependencies' '--no-dependencies' '--dry-run' '-e' '--exit-code' '--increment' '--no-increment' '--local' '--no-local' '--manual' '--no-manual' '-u' '--username' '--vcs' '--no-vcs' '-y' '--refresh')
+_shtab_ahriman_repo_update_option_strings=('-h' '--help' '--aur' '--no-aur' '--changes' '--no-changes' '--dependencies' '--no-dependencies' '--dry-run' '-e' '--exit-code' '--increment' '--no-increment' '--local' '--no-local' '--manual' '--no-manual' '-u' '--username' '--vcs' '--no-vcs' '-y' '--refresh')
+_shtab_ahriman_update_option_strings=('-h' '--help' '--aur' '--no-aur' '--changes' '--no-changes' '--dependencies' '--no-dependencies' '--dry-run' '-e' '--exit-code' '--increment' '--no-increment' '--local' '--no-local' '--manual' '--no-manual' '-u' '--username' '--vcs' '--no-vcs' '-y' '--refresh')
 _shtab_ahriman_service_clean_option_strings=('-h' '--help' '--cache' '--no-cache' '--chroot' '--no-chroot' '--manual' '--no-manual' '--packages' '--no-packages' '--pacman' '--no-pacman')
 _shtab_ahriman_clean_option_strings=('-h' '--help' '--cache' '--no-cache' '--chroot' '--no-chroot' '--manual' '--no-manual' '--packages' '--no-packages' '--pacman' '--no-pacman')
 _shtab_ahriman_repo_clean_option_strings=('-h' '--help' '--cache' '--no-cache' '--chroot' '--no-chroot' '--manual' '--no-manual' '--packages' '--no-packages' '--pacman' '--no-pacman')
@@ -76,7 +78,7 @@ _shtab_ahriman_web_option_strings=('-h' '--help')
 
 
 
-_shtab_ahriman_pos_0_choices=('aur-search' 'search' 'help-commands-unsafe' 'help' 'help-updates' 'help-version' 'version' 'package-add' 'add' 'package-update' 'package-remove' 'remove' 'package-status' 'status' 'package-status-remove' 'package-status-update' 'status-update' 'patch-add' 'patch-list' 'patch-remove' 'patch-set-add' 'repo-backup' 'repo-check' 'check' 'repo-create-keyring' 'repo-create-mirrorlist' 'repo-daemon' 'daemon' 'repo-rebuild' 'rebuild' 'repo-remove-unknown' 'remove-unknown' 'repo-report' 'report' 'repo-restore' 'repo-sign' 'sign' 'repo-status-update' 'repo-sync' 'sync' 'repo-tree' 'repo-triggers' 'repo-update' 'update' 'service-clean' 'clean' 'repo-clean' 'service-config' 'config' 'repo-config' 'service-config-validate' 'config-validate' 'repo-config-validate' 'service-key-import' 'key-import' 'service-repositories' 'service-run' 'run' 'service-setup' 'init' 'repo-init' 'repo-setup' 'setup' 'service-shell' 'shell' 'service-tree-migrate' 'user-add' 'user-list' 'user-remove' 'web')
+_shtab_ahriman_pos_0_choices=('aur-search' 'search' 'help-commands-unsafe' 'help' 'help-updates' 'help-version' 'version' 'package-add' 'add' 'package-update' 'package-changes' 'package-changes-remove' 'package-remove' 'remove' 'package-status' 'status' 'package-status-remove' 'package-status-update' 'status-update' 'patch-add' 'patch-list' 'patch-remove' 'patch-set-add' 'repo-backup' 'repo-check' 'check' 'repo-create-keyring' 'repo-create-mirrorlist' 'repo-daemon' 'daemon' 'repo-rebuild' 'rebuild' 'repo-remove-unknown' 'remove-unknown' 'repo-report' 'report' 'repo-restore' 'repo-sign' 'sign' 'repo-status-update' 'repo-sync' 'sync' 'repo-tree' 'repo-triggers' 'repo-update' 'update' 'service-clean' 'clean' 'repo-clean' 'service-config' 'config' 'repo-config' 'service-config-validate' 'config-validate' 'repo-config-validate' 'service-key-import' 'key-import' 'service-repositories' 'service-run' 'run' 'service-setup' 'init' 'repo-init' 'repo-setup' 'setup' 'service-shell' 'shell' 'service-tree-migrate' 'user-add' 'user-list' 'user-remove' 'web')
 _shtab_ahriman___log_handler_choices=('console' 'syslog' 'journald')
 _shtab_ahriman_aur_search___sort_by_choices=('description' 'first_submitted' 'id' 'last_modified' 'maintainer' 'name' 'num_votes' 'out_of_date' 'package_base' 'package_base_id' 'popularity' 'repository' 'submitter' 'url' 'url_path' 'version')
 _shtab_ahriman_search___sort_by_choices=('description' 'first_submitted' 'id' 'last_modified' 'maintainer' 'name' 'num_votes' 'out_of_date' 'package_base' 'package_base_id' 'popularity' 'repository' 'submitter' 'url' 'url_path' 'version')
@@ -187,6 +189,12 @@ _shtab_ahriman_package_update__n_nargs=0
 _shtab_ahriman_package_update___now_nargs=0
 _shtab_ahriman_package_update__y_nargs=0
 _shtab_ahriman_package_update___refresh_nargs=0
+_shtab_ahriman_package_changes__h_nargs=0
+_shtab_ahriman_package_changes___help_nargs=0
+_shtab_ahriman_package_changes__e_nargs=0
+_shtab_ahriman_package_changes___exit_code_nargs=0
+_shtab_ahriman_package_changes_remove__h_nargs=0
+_shtab_ahriman_package_changes_remove___help_nargs=0
 _shtab_ahriman_package_remove_pos_0_nargs=+
 _shtab_ahriman_package_remove__h_nargs=0
 _shtab_ahriman_package_remove___help_nargs=0
@@ -233,6 +241,8 @@ _shtab_ahriman_repo_backup___help_nargs=0
 _shtab_ahriman_repo_check_pos_0_nargs=*
 _shtab_ahriman_repo_check__h_nargs=0
 _shtab_ahriman_repo_check___help_nargs=0
+_shtab_ahriman_repo_check___changes_nargs=0
+_shtab_ahriman_repo_check___no_changes_nargs=0
 _shtab_ahriman_repo_check__e_nargs=0
 _shtab_ahriman_repo_check___exit_code_nargs=0
 _shtab_ahriman_repo_check___vcs_nargs=0
@@ -242,6 +252,8 @@ _shtab_ahriman_repo_check___refresh_nargs=0
 _shtab_ahriman_check_pos_0_nargs=*
 _shtab_ahriman_check__h_nargs=0
 _shtab_ahriman_check___help_nargs=0
+_shtab_ahriman_check___changes_nargs=0
+_shtab_ahriman_check___no_changes_nargs=0
 _shtab_ahriman_check__e_nargs=0
 _shtab_ahriman_check___exit_code_nargs=0
 _shtab_ahriman_check___vcs_nargs=0
@@ -256,8 +268,11 @@ _shtab_ahriman_repo_daemon__h_nargs=0
 _shtab_ahriman_repo_daemon___help_nargs=0
 _shtab_ahriman_repo_daemon___aur_nargs=0
 _shtab_ahriman_repo_daemon___no_aur_nargs=0
+_shtab_ahriman_repo_daemon___changes_nargs=0
+_shtab_ahriman_repo_daemon___no_changes_nargs=0
 _shtab_ahriman_repo_daemon___dependencies_nargs=0
 _shtab_ahriman_repo_daemon___no_dependencies_nargs=0
+_shtab_ahriman_repo_daemon___dry_run_nargs=0
 _shtab_ahriman_repo_daemon___local_nargs=0
 _shtab_ahriman_repo_daemon___no_local_nargs=0
 _shtab_ahriman_repo_daemon___manual_nargs=0
@@ -270,8 +285,11 @@ _shtab_ahriman_daemon__h_nargs=0
 _shtab_ahriman_daemon___help_nargs=0
 _shtab_ahriman_daemon___aur_nargs=0
 _shtab_ahriman_daemon___no_aur_nargs=0
+_shtab_ahriman_daemon___changes_nargs=0
+_shtab_ahriman_daemon___no_changes_nargs=0
 _shtab_ahriman_daemon___dependencies_nargs=0
 _shtab_ahriman_daemon___no_dependencies_nargs=0
+_shtab_ahriman_daemon___dry_run_nargs=0
 _shtab_ahriman_daemon___local_nargs=0
 _shtab_ahriman_daemon___no_local_nargs=0
 _shtab_ahriman_daemon___manual_nargs=0
@@ -330,6 +348,8 @@ _shtab_ahriman_repo_update__h_nargs=0
 _shtab_ahriman_repo_update___help_nargs=0
 _shtab_ahriman_repo_update___aur_nargs=0
 _shtab_ahriman_repo_update___no_aur_nargs=0
+_shtab_ahriman_repo_update___changes_nargs=0
+_shtab_ahriman_repo_update___no_changes_nargs=0
 _shtab_ahriman_repo_update___dependencies_nargs=0
 _shtab_ahriman_repo_update___no_dependencies_nargs=0
 _shtab_ahriman_repo_update___dry_run_nargs=0
@@ -350,6 +370,8 @@ _shtab_ahriman_update__h_nargs=0
 _shtab_ahriman_update___help_nargs=0
 _shtab_ahriman_update___aur_nargs=0
 _shtab_ahriman_update___no_aur_nargs=0
+_shtab_ahriman_update___changes_nargs=0
+_shtab_ahriman_update___no_changes_nargs=0
 _shtab_ahriman_update___dependencies_nargs=0
 _shtab_ahriman_update___no_dependencies_nargs=0
 _shtab_ahriman_update___dry_run_nargs=0
@@ -568,6 +590,15 @@ _set_new_action() {
 #     ${!x} -> ${hello} -> "world"
 _shtab_ahriman() {
   local completing_word="${COMP_WORDS[COMP_CWORD]}"
+  local completed_positional_actions
+  local current_action
+  local current_action_args_start_index
+  local current_action_choices
+  local current_action_compgen
+  local current_action_is_positional
+  local current_action_nargs
+  local current_option_strings
+  local sub_parsers
   COMPREPLY=()
 
   local prefix=_shtab_ahriman

package/share/man/man1/ahriman.1

@@ -1,9 +1,9 @@
-.TH AHRIMAN "1" "2023\-11\-13" "ahriman" "Generated Python Manual"
+.TH AHRIMAN "1" "2023\-12\-08" "ahriman" "Generated Python Manual"
 .SH NAME
 ahriman
 .SH SYNOPSIS
 .B ahriman
-[-h] [-a ARCHITECTURE] [-c CONFIGURATION] [--force] [-l LOCK] [--log-handler {console,syslog,journald}] [-q] [--report | --no-report] [-r REPOSITORY] [--unsafe] [-V] [--wait-timeout WAIT_TIMEOUT] {aur-search,search,help-commands-unsafe,help,help-updates,help-version,version,package-add,add,package-update,package-remove,remove,package-status,status,package-status-remove,package-status-update,status-update,patch-add,patch-list,patch-remove,patch-set-add,repo-backup,repo-check,check,repo-create-keyring,repo-create-mirrorlist,repo-daemon,daemon,repo-rebuild,rebuild,repo-remove-unknown,remove-unknown,repo-report,report,repo-restore,repo-sign,sign,repo-status-update,repo-sync,sync,repo-tree,repo-triggers,repo-update,update,service-clean,clean,repo-clean,service-config,config,repo-config,service-config-validate,config-validate,repo-config-validate,service-key-import,key-import,service-repositories,service-run,run,service-setup,init,repo-init,repo-setup,setup,service-shell,shell,service-tree-migrate,user-add,user-list,user-remove,web} ...
+[-h] [-a ARCHITECTURE] [-c CONFIGURATION] [--force] [-l LOCK] [--log-handler {console,syslog,journald}] [-q] [--report | --no-report] [-r REPOSITORY] [--unsafe] [-V] [--wait-timeout WAIT_TIMEOUT] {aur-search,search,help-commands-unsafe,help,help-updates,help-version,version,package-add,add,package-update,package-changes,package-changes-remove,package-remove,remove,package-status,status,package-status-remove,package-status-update,status-update,patch-add,patch-list,patch-remove,patch-set-add,repo-backup,repo-check,check,repo-create-keyring,repo-create-mirrorlist,repo-daemon,daemon,repo-rebuild,rebuild,repo-remove-unknown,remove-unknown,repo-report,report,repo-restore,repo-sign,sign,repo-status-update,repo-sync,sync,repo-tree,repo-triggers,repo-update,update,service-clean,clean,repo-clean,service-config,config,repo-config,service-config-validate,config-validate,repo-config-validate,service-key-import,key-import,service-repositories,service-run,run,service-setup,init,repo-init,repo-setup,setup,service-shell,shell,service-tree-migrate,user-add,user-list,user-remove,web} ...
 .SH DESCRIPTION
 ArcH linux ReposItory MANager
 
@@ -74,6 +74,12 @@ application version
 \fBahriman\fR \fI\,package\-add\/\fR
 add package
 .TP
+\fBahriman\fR \fI\,package\-changes\/\fR
+get package changes
+.TP
+\fBahriman\fR \fI\,package\-changes\-remove\/\fR
+remove package changes
+.TP
 \fBahriman\fR \fI\,package\-remove\/\fR
 remove package
 .TP
@@ -285,6 +291,29 @@ build as user
 \fB\-v\fR \fI\,VARIABLE\/\fR, \fB\-\-variable\fR \fI\,VARIABLE\/\fR
 apply specified makepkg variables to the next build
 
+.SH COMMAND \fI\,'ahriman package\-changes'\/\fR
+usage: ahriman package\-changes [\-h] [\-e] package
+
+retrieve package changes stored in database
+
+.TP
+\fBpackage\fR
+package base
+
+.SH OPTIONS \fI\,'ahriman package\-changes'\/\fR
+.TP
+\fB\-e\fR, \fB\-\-exit\-code\fR
+return non\-zero exit status if result is empty
+
+.SH COMMAND \fI\,'ahriman package\-changes\-remove'\/\fR
+usage: ahriman package\-changes\-remove [\-h] package
+
+remove the package changes stored remotely
+
+.TP
+\fBpackage\fR
+package base
+
 .SH COMMAND \fI\,'ahriman package\-remove'\/\fR
 usage: ahriman package\-remove [\-h] package [package ...]
 
@@ -418,7 +447,7 @@ backup repository settings and database
 path of the output archive
 
 .SH COMMAND \fI\,'ahriman repo\-check'\/\fR
-usage: ahriman repo\-check [\-h] [\-e] [\-\-vcs | \-\-no\-vcs] [\-y] [package ...]
+usage: ahriman repo\-check [\-h] [\-\-changes | \-\-no\-changes] [\-e] [\-\-vcs | \-\-no\-vcs] [\-y] [package ...]
 
 check for packages updates. Same as repo\-update \-\-dry\-run \-\-no\-manual
 
@@ -427,6 +456,10 @@ check for packages updates. Same as repo\-update \-\-dry\-run \-\-no\-manual
 filter check by package base
 
 .SH OPTIONS \fI\,'ahriman repo\-check'\/\fR
+.TP
+\fB\-\-changes\fR, \fB\-\-no\-changes\fR
+calculate changes from the latest known commit if available. Only applicable in dry run mode
+
 .TP
 \fB\-e\fR, \fB\-\-exit\-code\fR
 return non\-zero exit status if result is empty
@@ -450,8 +483,9 @@ usage: ahriman repo\-create\-mirrorlist [\-h]
 create package which contains list of available mirrors as set by configuration. Note, that this action will only create package, the package itself has to be built manually
 
 .SH COMMAND \fI\,'ahriman repo\-daemon'\/\fR
-usage: ahriman repo\-daemon [\-h] [\-i INTERVAL] [\-\-aur | \-\-no\-aur] [\-\-dependencies | \-\-no\-dependencies]
-                           [\-\-local | \-\-no\-local] [\-\-manual | \-\-no\-manual] [\-\-vcs | \-\-no\-vcs] [\-y]
+usage: ahriman repo\-daemon [\-h] [\-i INTERVAL] [\-\-aur | \-\-no\-aur] [\-\-changes | \-\-no\-changes]
+                           [\-\-dependencies | \-\-no\-dependencies] [\-\-dry\-run] [\-\-local | \-\-no\-local]
+                           [\-\-manual | \-\-no\-manual] [\-\-vcs | \-\-no\-vcs] [\-y]
 
 start process which periodically will run update process
 
@@ -464,10 +498,18 @@ interval between runs in seconds
 \fB\-\-aur\fR, \fB\-\-no\-aur\fR
 enable or disable checking for AUR updates
 
+.TP
+\fB\-\-changes\fR, \fB\-\-no\-changes\fR
+calculate changes from the latest known commit if available. Only applicable in dry run mode
+
 .TP
 \fB\-\-dependencies\fR, \fB\-\-no\-dependencies\fR
 process missing package dependencies
 
+.TP
+\fB\-\-dry\-run\fR
+just perform check for updates, same as check command
+
 .TP
 \fB\-\-local\fR, \fB\-\-no\-local\fR
 enable or disable checking of local packages for updates
@@ -594,9 +636,9 @@ run triggers on empty build result as configured by settings
 instead of running all triggers as set by configuration, just process specified ones in order of mention
 
 .SH COMMAND \fI\,'ahriman repo\-update'\/\fR
-usage: ahriman repo\-update [\-h] [\-\-aur | \-\-no\-aur] [\-\-dependencies | \-\-no\-dependencies] [\-\-dry\-run] [\-e]
-                           [\-\-increment | \-\-no\-increment] [\-\-local | \-\-no\-local] [\-\-manual | \-\-no\-manual] [\-u USERNAME]
-                           [\-\-vcs | \-\-no\-vcs] [\-y]
+usage: ahriman repo\-update [\-h] [\-\-aur | \-\-no\-aur] [\-\-changes | \-\-no\-changes] [\-\-dependencies | \-\-no\-dependencies]
+                           [\-\-dry\-run] [\-e] [\-\-increment | \-\-no\-increment] [\-\-local | \-\-no\-local]
+                           [\-\-manual | \-\-no\-manual] [\-u USERNAME] [\-\-vcs | \-\-no\-vcs] [\-y]
                            [package ...]
 
 check for packages updates and run build process if requested
@@ -610,6 +652,10 @@ filter check by package base
 \fB\-\-aur\fR, \fB\-\-no\-aur\fR
 enable or disable checking for AUR updates
 
+.TP
+\fB\-\-changes\fR, \fB\-\-no\-changes\fR
+calculate changes from the latest known commit if available. Only applicable in dry run mode
+
 .TP
 \fB\-\-dependencies\fR, \fB\-\-no\-dependencies\fR
 process missing package dependencies

package/share/zsh/site-functions/_ahriman

@@ -19,6 +19,8 @@ _shtab_ahriman_commands() {
     "init:create initial service configuration, requires root"
     "key-import:import PGP key from public sources to the repository user"
     "package-add:add existing or new package to the build queue"
+    "package-changes:retrieve package changes stored in database"
+    "package-changes-remove:remove the package changes stored remotely"
     "package-remove:remove package from the repository"
     "package-status:request status of the package"
     "package-status-remove:remove the package from the status page"
@@ -117,6 +119,7 @@ _shtab_ahriman_aur_search_options=(
 
 _shtab_ahriman_check_options=(
   "(- : *)"{-h,--help}"[show this help message and exit]"
+  {--changes,--no-changes}"[calculate changes from the latest known commit if available. Only applicable in dry run mode (default\: True)]:changes:"
   {-e,--exit-code}"[return non-zero exit status if result is empty (default\: False)]"
   {--vcs,--no-vcs}"[fetch actual version of VCS packages (default\: True)]:vcs:"
   "*"{-y,--refresh}"[download fresh package databases from the mirror before actions, -yy to force refresh even if up to date (default\: False)]"
@@ -149,7 +152,9 @@ _shtab_ahriman_daemon_options=(
   "(- : *)"{-h,--help}"[show this help message and exit]"
   {-i,--interval}"[interval between runs in seconds (default\: 43200)]:interval:"
   {--aur,--no-aur}"[enable or disable checking for AUR updates (default\: True)]:aur:"
+  {--changes,--no-changes}"[calculate changes from the latest known commit if available. Only applicable in dry run mode (default\: True)]:changes:"
   {--dependencies,--no-dependencies}"[process missing package dependencies (default\: True)]:dependencies:"
+  "--dry-run[just perform check for updates, same as check command (default\: False)]"
   {--local,--no-local}"[enable or disable checking of local packages for updates (default\: True)]:local:"
   {--manual,--no-manual}"[include or exclude manual updates (default\: True)]:manual:"
   {--vcs,--no-vcs}"[fetch actual version of VCS packages (default\: True)]:vcs:"
@@ -210,6 +215,17 @@ _shtab_ahriman_package_add_options=(
   "(*):package source (base name, path to local files, remote URL):"
 )
 
+_shtab_ahriman_package_changes_options=(
+  "(- : *)"{-h,--help}"[show this help message and exit]"
+  {-e,--exit-code}"[return non-zero exit status if result is empty (default\: False)]"
+  ":package base:"
+)
+
+_shtab_ahriman_package_changes_remove_options=(
+  "(- : *)"{-h,--help}"[show this help message and exit]"
+  ":package base:"
+)
+
 _shtab_ahriman_package_remove_options=(
   "(- : *)"{-h,--help}"[show this help message and exit]"
   "(*):package name or base:"
@@ -302,6 +318,7 @@ _shtab_ahriman_repo_backup_options=(
 
 _shtab_ahriman_repo_check_options=(
   "(- : *)"{-h,--help}"[show this help message and exit]"
+  {--changes,--no-changes}"[calculate changes from the latest known commit if available. Only applicable in dry run mode (default\: True)]:changes:"
   {-e,--exit-code}"[return non-zero exit status if result is empty (default\: False)]"
   {--vcs,--no-vcs}"[fetch actual version of VCS packages (default\: True)]:vcs:"
   "*"{-y,--refresh}"[download fresh package databases from the mirror before actions, -yy to force refresh even if up to date (default\: False)]"
@@ -342,7 +359,9 @@ _shtab_ahriman_repo_daemon_options=(
   "(- : *)"{-h,--help}"[show this help message and exit]"
   {-i,--interval}"[interval between runs in seconds (default\: 43200)]:interval:"
   {--aur,--no-aur}"[enable or disable checking for AUR updates (default\: True)]:aur:"
+  {--changes,--no-changes}"[calculate changes from the latest known commit if available. Only applicable in dry run mode (default\: True)]:changes:"
   {--dependencies,--no-dependencies}"[process missing package dependencies (default\: True)]:dependencies:"
+  "--dry-run[just perform check for updates, same as check command (default\: False)]"
   {--local,--no-local}"[enable or disable checking of local packages for updates (default\: True)]:local:"
   {--manual,--no-manual}"[include or exclude manual updates (default\: True)]:manual:"
   {--vcs,--no-vcs}"[fetch actual version of VCS packages (default\: True)]:vcs:"
@@ -434,6 +453,7 @@ _shtab_ahriman_repo_triggers_options=(
 _shtab_ahriman_repo_update_options=(
   "(- : *)"{-h,--help}"[show this help message and exit]"
   {--aur,--no-aur}"[enable or disable checking for AUR updates (default\: True)]:aur:"
+  {--changes,--no-changes}"[calculate changes from the latest known commit if available. Only applicable in dry run mode (default\: True)]:changes:"
   {--dependencies,--no-dependencies}"[process missing package dependencies (default\: True)]:dependencies:"
   "--dry-run[just perform check for updates, same as check command (default\: False)]"
   {-e,--exit-code}"[return non-zero exit status if result is empty (default\: False)]"
@@ -574,6 +594,7 @@ _shtab_ahriman_sync_options=(
 _shtab_ahriman_update_options=(
   "(- : *)"{-h,--help}"[show this help message and exit]"
   {--aur,--no-aur}"[enable or disable checking for AUR updates (default\: True)]:aur:"
+  {--changes,--no-changes}"[calculate changes from the latest known commit if available. Only applicable in dry run mode (default\: True)]:changes:"
   {--dependencies,--no-dependencies}"[process missing package dependencies (default\: True)]:dependencies:"
   "--dry-run[just perform check for updates, same as check command (default\: False)]"
   {-e,--exit-code}"[return non-zero exit status if result is empty (default\: False)]"
@@ -644,6 +665,8 @@ _shtab_ahriman() {
         init) _arguments -C -s $_shtab_ahriman_init_options ;;
         key-import) _arguments -C -s $_shtab_ahriman_key_import_options ;;
         package-add) _arguments -C -s $_shtab_ahriman_package_add_options ;;
+        package-changes) _arguments -C -s $_shtab_ahriman_package_changes_options ;;
+        package-changes-remove) _arguments -C -s $_shtab_ahriman_package_changes_remove_options ;;
         package-remove) _arguments -C -s $_shtab_ahriman_package_remove_options ;;
         package-status) _arguments -C -s $_shtab_ahriman_package_status_options ;;
         package-status-remove) _arguments -C -s $_shtab_ahriman_package_status_remove_options ;;

src/ahriman/application/ahriman.py

@@ -101,6 +101,8 @@ def _parser() -> argparse.ArgumentParser:
     _set_help_updates_parser(subparsers)
     _set_help_version_parser(subparsers)
     _set_package_add_parser(subparsers)
+    _set_package_changes_parser(subparsers)
+    _set_package_changes_remove_parser(subparsers)
     _set_package_remove_parser(subparsers)
     _set_package_status_parser(subparsers)
     _set_package_status_remove_parser(subparsers)
@@ -281,6 +283,44 @@ def _set_package_add_parser(root: SubParserAction) -> argparse.ArgumentParser:
     return parser
 
 
+def _set_package_changes_parser(root: SubParserAction) -> argparse.ArgumentParser:
+    """
+    add parser for package changes subcommand
+
+    Args:
+        root(SubParserAction): subparsers for the commands
+
+    Returns:
+        argparse.ArgumentParser: created argument parser
+    """
+    parser = root.add_parser("package-changes", help="get package changes",
+                             description="retrieve package changes stored in database",
+                             epilog="This feature requests package status from the web interface if it is available.",
+                             formatter_class=_formatter)
+    parser.add_argument("package", help="package base")
+    parser.add_argument("-e", "--exit-code", help="return non-zero exit status if result is empty", action="store_true")
+    parser.set_defaults(handler=handlers.Change, action=Action.List, lock=None, quiet=True, report=False, unsafe=True)
+    return parser
+
+
+def _set_package_changes_remove_parser(root: SubParserAction) -> argparse.ArgumentParser:
+    """
+    add parser for package change remove subcommand
+
+    Args:
+        root(SubParserAction): subparsers for the commands
+
+    Returns:
+        argparse.ArgumentParser: created argument parser
+    """
+    parser = root.add_parser("package-changes-remove", help="remove package changes",
+                             description="remove the package changes stored remotely",
+                             formatter_class=_formatter)
+    parser.add_argument("package", help="package base")
+    parser.set_defaults(handler=handlers.Change, action=Action.Remove, lock=None, quiet=True, report=False, unsafe=True)
+    return parser
+
+
 def _set_package_remove_parser(root: SubParserAction) -> argparse.ArgumentParser:
     """
     add parser for package removal subcommand
@@ -493,6 +533,9 @@ def _set_repo_check_parser(root: SubParserAction) -> argparse.ArgumentParser:
                              description="check for packages updates. Same as repo-update --dry-run --no-manual",
                              formatter_class=_formatter)
     parser.add_argument("package", help="filter check by package base", nargs="*")
+    parser.add_argument("--changes", help="calculate changes from the latest known commit if available. "
+                                          "Only applicable in dry run mode",
+                        action=argparse.BooleanOptionalAction, default=True)
     parser.add_argument("-e", "--exit-code", help="return non-zero exit status if result is empty", action="store_true")
     parser.add_argument("--vcs", help="fetch actual version of VCS packages",
                         action=argparse.BooleanOptionalAction, default=True)
@@ -558,8 +601,12 @@ def _set_repo_daemon_parser(root: SubParserAction) -> argparse.ArgumentParser:
     parser.add_argument("-i", "--interval", help="interval between runs in seconds", type=int, default=60 * 60 * 12)
     parser.add_argument("--aur", help="enable or disable checking for AUR updates",
                         action=argparse.BooleanOptionalAction, default=True)
+    parser.add_argument("--changes", help="calculate changes from the latest known commit if available. "
+                                          "Only applicable in dry run mode",
+                        action=argparse.BooleanOptionalAction, default=True)
     parser.add_argument("--dependencies", help="process missing package dependencies",
                         action=argparse.BooleanOptionalAction, default=True)
+    parser.add_argument("--dry-run", help="just perform check for updates, same as check command", action="store_true")
     parser.add_argument("--local", help="enable or disable checking of local packages for updates",
                         action=argparse.BooleanOptionalAction, default=True)
     parser.add_argument("--manual", help="include or exclude manual updates",
@@ -569,7 +616,7 @@ def _set_repo_daemon_parser(root: SubParserAction) -> argparse.ArgumentParser:
     parser.add_argument("-y", "--refresh", help="download fresh package databases from the mirror before actions, "
                                                 "-yy to force refresh even if up to date",
                         action="count", default=False)
-    parser.set_defaults(handler=handlers.Daemon, dry_run=False, exit_code=False, package=[])
+    parser.set_defaults(handler=handlers.Daemon, exit_code=False, package=[])
     return parser
 
 
@@ -769,6 +816,9 @@ def _set_repo_update_parser(root: SubParserAction) -> argparse.ArgumentParser:
     parser.add_argument("package", help="filter check by package base", nargs="*")
     parser.add_argument("--aur", help="enable or disable checking for AUR updates",
                         action=argparse.BooleanOptionalAction, default=True)
+    parser.add_argument("--changes", help="calculate changes from the latest known commit if available. "
+                                          "Only applicable in dry run mode",
+                        action=argparse.BooleanOptionalAction, default=True)
     parser.add_argument("--dependencies", help="process missing package dependencies",
                         action=argparse.BooleanOptionalAction, default=True)
     parser.add_argument("--dry-run", help="just perform check for updates, same as check command", action="store_true")

src/ahriman/application/application/application.py

@@ -117,7 +117,7 @@ class Application(ApplicationPackages, ApplicationRepository):
 
         Returns:
             list[Package]: updated packages list. Packager for dependencies will be copied from
-                original package
+            original package
         """
         def missing_dependencies(source: Iterable[Package]) -> dict[str, str | None]:
             # append list of known packages with packages which are in current sources
@@ -150,7 +150,7 @@ class Application(ApplicationPackages, ApplicationRepository):
                 with_dependencies[package.base] = package
 
                 # register package in local database
-                self.database.remote_update(package)
+                self.database.package_base_update(package)
                 self.repository.reporter.set_unknown(package)
 
         return list(with_dependencies.values())

src/ahriman/application/application/application_packages.py

@@ -65,7 +65,7 @@ class ApplicationPackages(ApplicationProperties):
         """
         package = Package.from_aur(source, username)
         self.database.build_queue_insert(package)
-        self.database.remote_update(package)
+        self.database.package_base_update(package)
 
     def _add_directory(self, source: str, *_: Any) -> None:
         """
@@ -139,7 +139,7 @@ class ApplicationPackages(ApplicationProperties):
         """
         package = Package.from_official(source, self.repository.pacman, username)
         self.database.build_queue_insert(package)
-        self.database.remote_update(package)
+        self.database.package_base_update(package)
 
     def add(self, names: Iterable[str], source: PackageSource, username: str | None = None) -> None:
         """

src/ahriman/application/application/application_repository.py

@@ -18,11 +18,10 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
 from collections.abc import Iterable
-from pathlib import Path
 
 from ahriman.application.application.application_properties import ApplicationProperties
+from ahriman.application.application.workers import Updater
 from ahriman.core.build_tools.sources import Sources
-from ahriman.core.tree import Tree
 from ahriman.models.package import Package
 from ahriman.models.packagers import Packagers
 from ahriman.models.result import Result
@@ -33,6 +32,23 @@ class ApplicationRepository(ApplicationProperties):
     repository control class
     """
 
+    def changes(self, packages: Iterable[Package]) -> None:
+        """
+        generate and update package changes
+
+        Args:
+            packages(Iterable[Package]): list of packages to retrieve changes
+        """
+        last_commit_hashes = self.database.hashes_get()
+
+        for package in packages:
+            last_commit_sha = last_commit_hashes.get(package.base)
+            if last_commit_sha is None:
+                continue  # skip check in case if we can't calculate diff
+
+            changes = self.repository.package_changes(package, last_commit_sha)
+            self.repository.reporter.package_changes_set(package.base, changes)
+
     def clean(self, *, cache: bool, chroot: bool, manual: bool, packages: bool, pacman: bool) -> None:
         """
         run all clean methods. Warning: some functions might not be available under non-root
@@ -137,26 +153,25 @@ class ApplicationRepository(ApplicationProperties):
         Returns:
             Result: update result
         """
-        def process_update(paths: Iterable[Path], result: Result) -> None:
-            if not paths:
-                return  # don't need to process if no update supplied
-            update_result = self.repository.process_update(paths, packagers)
-            self.on_result(result.merge(update_result))
+        result = Result()
 
-        # process built packages
-        build_result = Result()
-        packages = self.repository.packages_built()
-        process_update(packages, build_result)
+        # process already built packages if any
+        built_packages = self.repository.packages_built()
+        if built_packages:  # speedup a bit
+            build_result = self.repository.process_update(built_packages, packagers)
+            result.merge(build_result)
+            self.on_result(result.merge(build_result))
 
-        # process manual packages
-        tree = Tree.resolve(updates)
-        for num, level in enumerate(tree):
-            self.logger.info("processing level #%i %s", num, [package.base for package in level])
-            build_result = self.repository.process_build(level, packagers, bump_pkgrel=bump_pkgrel)
-            packages = self.repository.packages_built()
-            process_update(packages, build_result)
+        builder = Updater.load(self.repository_id, self.configuration, self.repository)
 
-        return build_result
+        # ok so for now we split all packages into chunks and process each chunk accordingly
+        partitions = builder.partition(updates)
+        for num, partition in enumerate(partitions):
+            self.logger.info("processing chunk #%i %s", num, [package.base for package in partition])
+            build_result = builder.update(partition, packagers, bump_pkgrel=bump_pkgrel)
+            self.on_result(result.merge(build_result))
+
+        return result
 
     def updates(self, filter_packages: Iterable[str], *,
                 aur: bool, local: bool, manual: bool, vcs: bool) -> list[Package]:

src/ahriman/application/application/workers/__init__.py

@@ -0,0 +1,20 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from ahriman.application.application.workers.updater import Updater

src/ahriman/application/application/workers/local_updater.py

@@ -0,0 +1,77 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from collections.abc import Iterable
+
+from ahriman.application.application.workers.updater import Updater
+from ahriman.core.repository import Repository
+from ahriman.core.tree import Tree
+from ahriman.models.package import Package
+from ahriman.models.packagers import Packagers
+from ahriman.models.result import Result
+
+
+class LocalUpdater(Updater):
+    """
+    local build process implementation
+
+    Attributes:
+        repository(Repository): repository instance
+    """
+
+    def __init__(self, repository: Repository) -> None:
+        """
+        default constructor
+
+        Args:
+            repository(Repository): repository instance
+        """
+        self.repository = repository
+
+    def partition(self, packages: Iterable[Package]) -> list[list[Package]]:
+        """
+        split packages into partitions to be processed by this worker
+
+        Args:
+            packages(Iterable[Package]): list of packages to partition
+
+        Returns:
+            list[list[Package]]: packages partitioned by this worker type
+        """
+        return Tree.resolve(packages)
+
+    def update(self, updates: Iterable[Package], packagers: Packagers | None = None, *,
+               bump_pkgrel: bool = False) -> Result:
+        """
+        run package updates
+
+        Args:
+            updates(Iterable[Package]): list of packages to update
+            packagers(Packagers | None, optional): optional override of username for build process
+                (Default value = None)
+            bump_pkgrel(bool, optional): bump pkgrel in case of local version conflict (Default value = False)
+
+        Returns:
+            Result: update result
+        """
+        build_result = self.repository.process_build(updates, packagers, bump_pkgrel=bump_pkgrel)
+        packages = self.repository.packages_built()
+        update_result = self.repository.process_update(packages, packagers)
+
+        return build_result.merge(update_result)

src/ahriman/application/application/workers/remote_updater.py

@@ -0,0 +1,140 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from collections import deque
+from collections.abc import Iterable
+
+from ahriman.application.application.workers.updater import Updater
+from ahriman.core.configuration import Configuration
+from ahriman.core.http import SyncAhrimanClient
+from ahriman.core.tree import Tree
+from ahriman.models.package import Package
+from ahriman.models.packagers import Packagers
+from ahriman.models.repository_id import RepositoryId
+from ahriman.models.result import Result
+from ahriman.models.worker import Worker
+
+
+class RemoteUpdater(Updater):
+    """
+    remote update worker
+
+    Attributes:
+        configuration(Configuration): configuration instance
+        repository_id(RepositoryId): repository unique identifier
+        workers(list[Worker]): worker identifiers
+    """
+
+    def __init__(self, workers: list[Worker], repository_id: RepositoryId, configuration: Configuration) -> None:
+        """
+        default constructor
+
+        Args:
+            workers(list[Worker]): worker identifiers
+            repository_id(RepositoryId): repository unique identifier
+            configuration(Configuration): configuration instance
+        """
+        self.workers = workers
+        self.repository_id = repository_id
+        self.configuration = configuration
+
+        self._clients: deque[tuple[Worker, SyncAhrimanClient]] = deque()
+
+    @property
+    def clients(self) -> dict[Worker, SyncAhrimanClient]:
+        """
+        extract loaded clients. Note that this method yields only workers which have been already loaded
+
+        Returns:
+            dict[Worker, SyncAhrimanClient]: map of the worker to the related web client
+        """
+        return dict(self._clients)
+
+    @staticmethod
+    def _update_url(worker: Worker) -> str:
+        """
+        get url for updates
+
+        Args:
+            worker(Worker): worker identifier
+
+        Returns:
+            str: full url for web service to run update process
+        """
+        return f"{worker.address}/api/v1/service/add"
+
+    def next_worker(self) -> tuple[Worker, SyncAhrimanClient]:
+        """
+        generate next not-used web client. In case if all clients have been already used, it yields next not used client
+
+        Returns:
+            tuple[Worker, SyncAhrimanClient]: worker and constructed client instance for the web
+        """
+        # check if there is not used yet worker
+        worker = next((worker for worker in self.workers if worker not in self.clients), None)
+        if worker is not None:
+            client = SyncAhrimanClient(self.configuration, "status")
+            client.address = worker.address
+        else:
+            worker, client = self._clients.popleft()
+
+        # register worker in the queue
+        self._clients.append((worker, client))
+
+        return worker, client
+
+    def partition(self, packages: Iterable[Package]) -> list[list[Package]]:
+        """
+        split packages into partitions to be processed by this worker
+
+        Args:
+            packages(Iterable[Package]): list of packages to partition
+
+        Returns:
+            list[list[Package]]: packages partitioned by this worker type
+        """
+        return Tree.partition(packages, count=len(self.workers))
+
+    def update(self, updates: Iterable[Package], packagers: Packagers | None = None, *,
+               bump_pkgrel: bool = False) -> Result:
+        """
+        run package updates
+
+        Args:
+            updates(Iterable[Package]): list of packages to update
+            packagers(Packagers | None, optional): optional override of username for build process
+                (Default value = None)
+            bump_pkgrel(bool, optional): bump pkgrel in case of local version conflict (Default value = False)
+
+        Returns:
+            Result: update result
+        """
+        payload = {
+            "increment": bump_pkgrel,
+            "packager": packagers.default if packagers is not None else None,
+            "packages": [package.base for package in updates],
+            "patches": [],  # might be used later
+            "refresh": True,
+        }
+
+        worker, client = self.next_worker()
+        client.make_request("POST", self._update_url(worker), params=self.repository_id.query(), json=payload)
+        # we don't block here for process
+
+        return Result()

src/ahriman/application/application/workers/updater.py

@@ -0,0 +1,102 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from __future__ import annotations
+
+from collections.abc import Iterable
+
+from ahriman.core.configuration import Configuration
+from ahriman.core.log import LazyLogging
+from ahriman.core.repository import Repository
+from ahriman.models.package import Package
+from ahriman.models.packagers import Packagers
+from ahriman.models.repository_id import RepositoryId
+from ahriman.models.result import Result
+from ahriman.models.worker import Worker
+
+
+class Updater(LazyLogging):
+    """
+    updater handler interface
+
+    Attributes:
+        split_method(Callable[[Iterable[Package]], list[list[Package]]]): method to split packages into chunks
+    """
+
+    @staticmethod
+    def load(repository_id: RepositoryId, configuration: Configuration,
+             repository: Repository, workers: list[Worker] | None = None) -> Updater:
+        """
+        construct updaters from parameters
+
+        Args:
+            repository_id(RepositoryId): repository unique identifier
+            configuration(Configuration): configuration instance
+            repository(Repository): repository instance
+            workers(list[Worker] | None, optional): worker identifiers if any (Default value = None)
+
+        Returns:
+            Updater: constructed updater worker
+        """
+        if workers is None:
+            # no workers set explicitly, try to guess from configuration
+            workers = [Worker(address) for address in configuration.getlist("build", "workers", fallback=[])]
+
+        if workers:
+            # there is something we could use as remote workers
+            from ahriman.application.application.workers.remote_updater import RemoteUpdater
+            return RemoteUpdater(workers, repository_id, configuration)
+
+        # and finally no workers available, just use local service
+        from ahriman.application.application.workers.local_updater import LocalUpdater
+        return LocalUpdater(repository)
+
+    def partition(self, packages: Iterable[Package]) -> list[list[Package]]:
+        """
+        split packages into partitions to be processed by this worker
+
+        Args:
+            packages(Iterable[Package]): list of packages to partition
+
+        Returns:
+            list[list[Package]]: packages partitioned by this worker type
+
+        Raises:
+            NotImplementedError: not implemented method
+        """
+        raise NotImplementedError
+
+    def update(self, updates: Iterable[Package], packagers: Packagers | None = None, *,
+               bump_pkgrel: bool = False) -> Result:
+        """
+        run package updates
+
+        Args:
+            updates(Iterable[Package]): list of packages to update
+            packagers(Packagers | None, optional): optional override of username for build process
+                (Default value = None)
+            bump_pkgrel(bool, optional): bump pkgrel in case of local version conflict (Default value = False)
+
+        Returns:
+            Result: update result
+
+        Raises:
+            NotImplementedError: not implemented method
+        """
+        raise NotImplementedError

src/ahriman/application/handlers/__init__.py

@@ -21,6 +21,7 @@ from ahriman.application.handlers.handler import Handler
 
 from ahriman.application.handlers.add import Add
 from ahriman.application.handlers.backup import Backup
+from ahriman.application.handlers.change import Change
 from ahriman.application.handlers.clean import Clean
 from ahriman.application.handlers.daemon import Daemon
 from ahriman.application.handlers.dump import Dump

src/ahriman/application/handlers/change.py

@@ -0,0 +1,59 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+import argparse
+
+from ahriman.application.application import Application
+from ahriman.application.handlers import Handler
+from ahriman.core.configuration import Configuration
+from ahriman.core.formatters import ChangesPrinter
+from ahriman.models.action import Action
+from ahriman.models.changes import Changes
+from ahriman.models.repository_id import RepositoryId
+
+
+class Change(Handler):
+    """
+    package changes handler
+    """
+
+    ALLOW_MULTI_ARCHITECTURE_RUN = False  # conflicting io
+
+    @classmethod
+    def run(cls, args: argparse.Namespace, repository_id: RepositoryId, configuration: Configuration, *,
+            report: bool) -> None:
+        """
+        callback for command line
+
+        Args:
+            args(argparse.Namespace): command line args
+            repository_id(RepositoryId): repository unique identifier
+            configuration(Configuration): configuration instance
+            report(bool): force enable or disable reporting
+        """
+        application = Application(repository_id, configuration, report=True)
+        client = application.repository.reporter
+
+        match args.action:
+            case Action.List:
+                changes = client.package_changes_get(args.package)
+                ChangesPrinter(changes)(verbose=True, separator="")
+                Change.check_if_empty(args.exit_code, changes.is_empty)
+            case Action.Remove:
+                client.package_changes_set(args.package, Changes())

src/ahriman/application/handlers/daemon.py

@@ -43,8 +43,10 @@ class Daemon(Handler):
             report(bool): force enable or disable reporting
         """
         from ahriman.application.handlers import Update
-        Update.run(args, repository_id, configuration, report=report)
-        timer = threading.Timer(args.interval, Daemon.run, args=[args, repository_id, configuration],
-                                kwargs={"report": report})
-        timer.start()
-        timer.join()
+
+        event = threading.Event()
+        try:
+            while not event.wait(args.interval):
+                Update.run(args, repository_id, configuration, report=report)
+        except KeyboardInterrupt:
+            pass  # normal exit

src/ahriman/application/handlers/patch.py

@@ -79,7 +79,7 @@ class Patch(Handler):
 
         Returns:
             tuple[str, PkgbuildPatch]: package base and created PKGBUILD patch based on the diff from master HEAD
-                to current files
+            to current files
         """
         package = Package.from_build(sources_dir, architecture, None)
         patch = Sources.patch_create(sources_dir, *track)

src/ahriman/application/handlers/update.py

@@ -47,9 +47,13 @@ class Update(Handler):
         """
         application = Application(repository_id, configuration, report=report, refresh_pacman_database=args.refresh)
         application.on_start()
+
         packages = application.updates(args.package, aur=args.aur, local=args.local, manual=args.manual, vcs=args.vcs)
-        Update.check_if_empty(args.exit_code, not packages)
-        if args.dry_run:
+        if args.dry_run:  # some check specific actions
+            if args.changes:  # generate changes if requested
+                application.changes(packages)
+
+            Update.check_if_empty(args.exit_code, not packages)  # status code check
             return
 
         packages = application.with_dependencies(packages, process_dependencies=args.dependencies)

src/ahriman/application/handlers/validate.py

@@ -125,7 +125,7 @@ class Validate(Handler):
 
         Returns:
             dict[str, Any]: schema with added elements from source schema if they were set before and not presented
-                in the new one. Note, that schema will be modified in-place
+            in the new one. Note, that schema will be modified in-place
         """
         for key, value in source.items():
             if key not in schema:

src/ahriman/core/auth/helpers.py

@@ -20,7 +20,7 @@
 from typing import Any
 
 try:
-    import aiohttp_security  # type: ignore[import-untyped]
+    import aiohttp_security
     _has_aiohttp_security = True
 except ImportError:
     _has_aiohttp_security = False

src/ahriman/core/build_tools/sources.py

@@ -21,6 +21,7 @@ import shutil
 
 from pathlib import Path
 
+from ahriman.core.exceptions import CalledProcessError
 from ahriman.core.log import LazyLogging
 from ahriman.core.util import check_output, utcnow, walk
 from ahriman.models.package import Package
@@ -42,6 +43,25 @@ class Sources(LazyLogging):
     DEFAULT_BRANCH = "master"  # default fallback branch
     DEFAULT_COMMIT_AUTHOR = ("ahriman", "ahriman@localhost")
 
+    @staticmethod
+    def changes(source_dir: Path, last_commit_sha: str | None) -> str | None:
+        """
+        extract changes from the last known commit if available
+
+        Args:
+            source_dir(Path): local path to directory with source files
+            last_commit_sha(str | None): last known commit hash
+
+        Returns:
+            str | None: changes from the last commit if available or ``None`` otherwise
+        """
+        if last_commit_sha is None:
+            return None  # no previous reference found
+
+        instance = Sources()
+        instance.fetch_until(source_dir, commit_sha=last_commit_sha)
+        return instance.diff(source_dir, last_commit_sha)
+
     @staticmethod
     def extend_architectures(sources_dir: Path, architecture: str) -> list[PkgbuildPatch]:
         """
@@ -61,13 +81,16 @@ class Sources(LazyLogging):
         return [PkgbuildPatch("arch", list(architectures))]
 
     @staticmethod
-    def fetch(sources_dir: Path, remote: RemoteSource) -> None:
+    def fetch(sources_dir: Path, remote: RemoteSource) -> str | None:
         """
         either clone repository or update it to origin/``remote.branch``
 
         Args:
             sources_dir(Path): local path to fetch
             remote(RemoteSource): remote target (from where to fetch)
+
+        Returns:
+            str | None: current commit sha if available
         """
         instance = Sources()
         # local directory exists and there is .git directory
@@ -75,13 +98,12 @@ class Sources(LazyLogging):
         if is_initialized_git and not instance.has_remotes(sources_dir):
             # there is git repository, but no remote configured so far
             instance.logger.info("skip update at %s because there are no branches configured", sources_dir)
-            return
+            return instance.head(sources_dir)
 
         branch = remote.branch or instance.DEFAULT_BRANCH
         if is_initialized_git:
             instance.logger.info("update HEAD to remote at %s using branch %s", sources_dir, branch)
-            check_output("git", "fetch", "--quiet", "--depth", "1", "origin", branch,
-                         cwd=sources_dir, logger=instance.logger)
+            instance.fetch_until(sources_dir, branch=branch)
         elif remote.git_url is not None:
             instance.logger.info("clone remote %s to %s using branch %s", remote.git_url, sources_dir, branch)
             check_output("git", "clone", "--quiet", "--depth", "1", "--branch", branch, "--single-branch",
@@ -100,6 +122,8 @@ class Sources(LazyLogging):
         pkgbuild_dir = remote.pkgbuild_dir or sources_dir.resolve()
         instance.move((sources_dir / pkgbuild_dir).resolve(), sources_dir)
 
+        return instance.head(sources_dir)
+
     @staticmethod
     def has_remotes(sources_dir: Path) -> bool:
         """
@@ -136,7 +160,7 @@ class Sources(LazyLogging):
         instance.commit(sources_dir)
 
     @staticmethod
-    def load(sources_dir: Path, package: Package, patches: list[PkgbuildPatch], paths: RepositoryPaths) -> None:
+    def load(sources_dir: Path, package: Package, patches: list[PkgbuildPatch], paths: RepositoryPaths) -> str | None:
         """
         fetch sources from remote and apply patches
 
@@ -145,17 +169,22 @@ class Sources(LazyLogging):
             package(Package): package definitions
             patches(list[PkgbuildPatch]): optional patch to be applied
             paths(RepositoryPaths): repository paths instance
+
+        Returns:
+            str | None: current commit sha if available
         """
         instance = Sources()
         if (cache_dir := paths.cache_for(package.base)).is_dir() and cache_dir != sources_dir:
             # no need to clone whole repository, just copy from cache first
             shutil.copytree(cache_dir, sources_dir, dirs_exist_ok=True)
-        instance.fetch(sources_dir, package.remote)
+        last_commit_sha = instance.fetch(sources_dir, package.remote)
 
         patches.extend(instance.extend_architectures(sources_dir, paths.repository_id.architecture))
         for patch in patches:
             instance.patch_apply(sources_dir, patch)
 
+        return last_commit_sha
+
     @staticmethod
     def patch_create(sources_dir: Path, *pattern: str) -> str:
         """
@@ -247,17 +276,47 @@ class Sources(LazyLogging):
 
         return True
 
-    def diff(self, sources_dir: Path) -> str:
+    def diff(self, sources_dir: Path, sha: str | None = None) -> str:
         """
         generate diff from the current version and write it to the output file
 
         Args:
             sources_dir(Path): local path to git repository
+            sha(str | None, optional): optional commit sha to calculate diff (Default value = None)
 
         Returns:
             str: patch as plain string
         """
-        return check_output("git", "diff", cwd=sources_dir, logger=self.logger)
+        args = []
+        if sha is not None:
+            args.append(sha)
+        return check_output("git", "diff", *args, cwd=sources_dir, logger=self.logger)
+
+    def fetch_until(self, sources_dir: Path, *, branch: str | None = None, commit_sha: str | None = None) -> None:
+        """
+        fetch repository until commit sha
+
+        Args:
+            sources_dir(Path): local path to git repository
+            branch(str | None, optional): use specified branch (Default value = None)
+            commit_sha(str | None, optional): commit hash to fetch. If none set, only one will be fetched
+                (Default value = None)
+        """
+        commit_sha = commit_sha or "HEAD"  # if none set we just fetch the last commit
+
+        commits_count = 1
+        while commit_sha is not None:
+            command = ["git", "fetch", "--quiet", "--depth", str(commits_count)]
+            if branch is not None:
+                command += ["origin", branch]
+            check_output(*command, cwd=sources_dir, logger=self.logger)  # fetch one more level
+
+            try:
+                # check if there is an object in current git directory
+                check_output("git", "cat-file", "-e", commit_sha, cwd=sources_dir, logger=self.logger)
+                commit_sha = None  # reset search
+            except CalledProcessError:
+                commits_count += 1  # increase depth
 
     def has_changes(self, sources_dir: Path) -> bool:
         """
@@ -273,6 +332,20 @@ class Sources(LazyLogging):
         changes = check_output("git", "diff", "--cached", "--name-only", cwd=sources_dir, logger=self.logger)
         return bool(changes)
 
+    def head(self, sources_dir: Path, ref_name: str = "HEAD") -> str:
+        """
+        extract HEAD reference for the current git repository
+
+        Args:
+            sources_dir(Path): local path to git repository
+            ref_name(str, optional): reference name (Default value = "HEAD")
+
+        Returns:
+            str: HEAD commit hash
+        """
+        # we might want to parse git files instead though
+        return check_output("git", "rev-parse", ref_name, cwd=sources_dir)
+
     def move(self, pkgbuild_dir: Path, sources_dir: Path) -> None:
         """
         move content from pkgbuild_dir to sources_dir

src/ahriman/core/build_tools/task.py

@@ -109,7 +109,7 @@ class Task(LazyLogging):
         ).splitlines()
         return [Path(package) for package in packages]
 
-    def init(self, sources_dir: Path, database: SQLite, local_version: str | None) -> None:
+    def init(self, sources_dir: Path, database: SQLite, local_version: str | None) -> str | None:
         """
         fetch package from git
 
@@ -118,10 +118,13 @@ class Task(LazyLogging):
             database(SQLite): database instance
             local_version(str | None): local version of the package. If set and equal to current version, it will
                 automatically bump pkgrel
+
+        Returns:
+            str | None: current commit sha if available
         """
-        Sources.load(sources_dir, self.package, database.patches_get(self.package.base), self.paths)
+        last_commit_sha = Sources.load(sources_dir, self.package, database.patches_get(self.package.base), self.paths)
         if local_version is None:
-            return  # there is no local package or pkgrel increment is disabled
+            return last_commit_sha  # there is no local package or pkgrel increment is disabled
 
         # load fresh package
         loaded_package = Package.from_build(sources_dir, self.architecture, None)
@@ -129,3 +132,5 @@ class Task(LazyLogging):
             self.logger.info("package %s is the same as in repo, bumping pkgrel to %s", self.package.base, pkgrel)
             patch = PkgbuildPatch("pkgrel", pkgrel)
             patch.write(sources_dir / "PKGBUILD")
+
+        return last_commit_sha

src/ahriman/core/configuration/schema.py

@@ -213,6 +213,15 @@ CONFIGURATION_SCHEMA: ConfigurationSchema = {
                 "coerce": "integer",
                 "min": 0,
             },
+            "workers": {
+                "type": "list",
+                "coerce": "list",
+                "schema": {
+                    "type": "string",
+                    "empty": False,
+                    "is_url": [],
+                },
+            },
         },
     },
     "repository": {
@@ -333,6 +342,10 @@ CONFIGURATION_SCHEMA: ConfigurationSchema = {
                 "min": 0,
                 "max": 65535,
             },
+            "service_only": {
+                "type": "boolean",
+                "coerce": "boolean",
+            },
             "static_path": {
                 "type": "path",
                 "coerce": "absolute_path",

src/ahriman/core/database/migrations/m012_last_commit_sha.py

@@ -0,0 +1,33 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+__all__ = ["steps"]
+
+
+steps = [
+    """
+    create table package_changes (
+        package_base text not null,
+        repository text not null,
+        last_commit_sha text not null,
+        changes text,
+        unique (package_base, repository)
+    )
+    """,
+]

src/ahriman/core/database/operations/__init__.py

@@ -21,6 +21,7 @@ from ahriman.core.database.operations.operations import Operations
 
 from ahriman.core.database.operations.auth_operations import AuthOperations
 from ahriman.core.database.operations.build_operations import BuildOperations
+from ahriman.core.database.operations.changes_operations import ChangesOperations
 from ahriman.core.database.operations.logs_operations import LogsOperations
 from ahriman.core.database.operations.package_operations import PackageOperations
 from ahriman.core.database.operations.patch_operations import PatchOperations

src/ahriman/core/database/operations/changes_operations.py

@@ -0,0 +1,143 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from sqlite3 import Connection
+
+from ahriman.core.database.operations import Operations
+from ahriman.models.changes import Changes
+from ahriman.models.repository_id import RepositoryId
+
+
+class ChangesOperations(Operations):
+    """
+    operations for source files changes
+    """
+
+    def changes_get(self, package_base: str, repository_id: RepositoryId | None = None) -> Changes:
+        """
+        get changes for the specific package base if available
+
+        Args:
+            package_base(str): package base to search
+            repository_id(RepositoryId, optional): repository unique identifier override (Default value = None)
+
+        Returns:
+            Changes: changes for the package base if available
+        """
+        repository_id = repository_id or self._repository_id
+
+        def run(connection: Connection) -> Changes:
+            return next(
+                (
+                    Changes(row["last_commit_sha"], row["changes"] or None)
+                    for row in connection.execute(
+                        """
+                        select last_commit_sha, changes from package_changes
+                        where package_base = :package_base and repository = :repository
+                        """,
+                        {
+                            "package_base": package_base,
+                            "repository": repository_id.id,
+                        }
+                    )
+                ),
+                Changes()
+            )
+
+        return self.with_connection(run)
+
+    def changes_insert(self, package_base: str, changes: Changes, repository_id: RepositoryId | None = None) -> None:
+        """
+        insert packages to build queue
+
+        Args:
+            package_base(str): package base to insert
+            changes(Changes): package changes (as in patch format)
+            repository_id(RepositoryId, optional): repository unique identifier override (Default value = None)
+        """
+        repository_id = repository_id or self._repository_id
+
+        def run(connection: Connection) -> None:
+            connection.execute(
+                """
+                insert into package_changes
+                (package_base, last_commit_sha, changes, repository)
+                values
+                (:package_base, :last_commit_sha, :changes ,:repository)
+                on conflict (package_base, repository) do update set
+                last_commit_sha = :last_commit_sha, changes = :changes
+                """,
+                {
+                    "package_base": package_base,
+                    "last_commit_sha": changes.last_commit_sha,
+                    "changes": changes.changes,
+                    "repository": repository_id.id,
+                })
+
+        if changes.last_commit_sha is None:
+            return self.changes_remove(package_base, repository_id)
+        return self.with_connection(run, commit=True)
+
+    def changes_remove(self, package_base: str | None, repository_id: RepositoryId | None = None) -> None:
+        """
+        remove packages changes
+
+        Args:
+            package_base(str | None): optional filter by package base
+            repository_id(RepositoryId, optional): repository unique identifier override (Default value = None)
+        """
+        repository_id = repository_id or self._repository_id
+
+        def run(connection: Connection) -> None:
+            connection.execute(
+                """
+                delete from package_changes
+                where (:package_base is null or package_base = :package_base)
+                  and repository = :repository
+                """,
+                {
+                    "package_base": package_base,
+                    "repository": repository_id.id,
+                })
+
+        return self.with_connection(run, commit=True)
+
+    def hashes_get(self, repository_id: RepositoryId | None = None) -> dict[str, str]:
+        """
+        extract last commit hashes if available
+
+        Args:
+            repository_id(RepositoryId, optional): repository unique identifier override (Default value = None)
+
+        Returns:
+            dict[str, str]: map of package base to its last commit hash
+        """
+
+        repository_id = repository_id or self._repository_id
+
+        def run(connection: Connection) -> dict[str, str]:
+            return {
+                row["package_base"]: row["last_commit_sha"]
+                for row in connection.execute(
+                    """select package_base, last_commit_sha from package_changes where repository = :repository""",
+                    {"repository": repository_id.id}
+                )
+            }
+
+        return self.with_connection(run)

src/ahriman/core/database/operations/package_operations.py

@@ -246,6 +246,21 @@ class PackageOperations(Operations):
             )
         }
 
+    def package_base_update(self, package: Package, repository_id: RepositoryId | None = None) -> None:
+        """
+        update package base only
+
+        Args:
+            package(Package): package properties
+            repository_id(RepositoryId, optional): repository unique identifier override (Default value = None)
+        """
+        repository_id = repository_id or self._repository_id
+
+        def run(connection: Connection) -> None:
+            self._package_update_insert_base(connection, package, repository_id)
+
+        return self.with_connection(run, commit=True)
+
     def package_remove(self, package_base: str, repository_id: RepositoryId | None = None) -> None:
         """
         remove package from database
@@ -302,21 +317,6 @@ class PackageOperations(Operations):
 
         return self.with_connection(lambda connection: list(run(connection)))
 
-    def remote_update(self, package: Package, repository_id: RepositoryId | None = None) -> None:
-        """
-        update package remote source
-
-        Args:
-            package(Package): package properties
-            repository_id(RepositoryId, optional): repository unique identifier override (Default value = None)
-        """
-        repository_id = repository_id or self._repository_id
-
-        def run(connection: Connection) -> None:
-            self._package_update_insert_base(connection, package, repository_id)
-
-        return self.with_connection(run, commit=True)
-
     def remotes_get(self, repository_id: RepositoryId | None = None) -> dict[str, RemoteSource]:
         """
         get packages remotes based on current settings

src/ahriman/core/database/sqlite.py

@@ -25,11 +25,12 @@ from typing import Self
 
 from ahriman.core.configuration import Configuration
 from ahriman.core.database.migrations import Migrations
-from ahriman.core.database.operations import AuthOperations, BuildOperations, LogsOperations, PackageOperations, \
-    PatchOperations
+from ahriman.core.database.operations import AuthOperations, BuildOperations, ChangesOperations, LogsOperations, \
+    PackageOperations, PatchOperations
 
 
-class SQLite(AuthOperations, BuildOperations, LogsOperations, PackageOperations, PatchOperations):
+# pylint: disable=too-many-ancestors
+class SQLite(AuthOperations, BuildOperations, ChangesOperations, LogsOperations, PackageOperations, PatchOperations):
     """
     wrapper for sqlite3 database
 

src/ahriman/core/formatters/__init__.py

@@ -18,16 +18,17 @@
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
 from ahriman.core.formatters.printer import Printer
-from ahriman.core.formatters.string_printer import StringPrinter
 
 from ahriman.core.formatters.aur_printer import AurPrinter
 from ahriman.core.formatters.build_printer import BuildPrinter
+from ahriman.core.formatters.changes_printer import ChangesPrinter
 from ahriman.core.formatters.configuration_paths_printer import ConfigurationPathsPrinter
 from ahriman.core.formatters.configuration_printer import ConfigurationPrinter
 from ahriman.core.formatters.package_printer import PackagePrinter
 from ahriman.core.formatters.patch_printer import PatchPrinter
 from ahriman.core.formatters.repository_printer import RepositoryPrinter
 from ahriman.core.formatters.status_printer import StatusPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.core.formatters.tree_printer import TreePrinter
 from ahriman.core.formatters.update_printer import UpdatePrinter
 from ahriman.core.formatters.user_printer import UserPrinter

src/ahriman/core/formatters/aur_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.core.util import pretty_datetime
 from ahriman.models.aur_package import AURPackage
 from ahriman.models.property import Property

src/ahriman/core/formatters/build_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.package import Package
 
 

src/ahriman/core/formatters/changes_printer.py

@@ -0,0 +1,64 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from ahriman.core.formatters import Printer
+from ahriman.models.changes import Changes
+from ahriman.models.property import Property
+
+
+class ChangesPrinter(Printer):
+    """
+    print content of the changes object
+
+    Attributes:
+        changes(Changes): package changes
+    """
+
+    def __init__(self, changes: Changes) -> None:
+        """
+        default constructor
+
+        Args:
+            changes(Changes): package changes
+        """
+        Printer.__init__(self)
+        self.changes = changes
+
+    def properties(self) -> list[Property]:
+        """
+        convert content into printable data
+
+        Returns:
+            list[Property]: list of content properties
+        """
+        if self.changes.is_empty:
+            return []
+        return [Property("", self.changes.changes, is_required=True, indent=0)]
+
+    # pylint: disable=redundant-returns-doc
+    def title(self) -> str | None:
+        """
+        generate entry title from content
+
+        Returns:
+            str | None: content title if it can be generated and None otherwise
+        """
+        if self.changes.is_empty:
+            return None
+        return self.changes.last_commit_sha

src/ahriman/core/formatters/configuration_paths_printer.py

@@ -19,7 +19,7 @@
 #
 from pathlib import Path
 
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.property import Property
 
 

src/ahriman/core/formatters/configuration_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.property import Property
 
 

src/ahriman/core/formatters/package_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.build_status import BuildStatus
 from ahriman.models.package import Package
 from ahriman.models.property import Property

src/ahriman/core/formatters/patch_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.pkgbuild_patch import PkgbuildPatch
 from ahriman.models.property import Property
 

src/ahriman/core/formatters/repository_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.property import Property
 from ahriman.models.repository_id import RepositoryId
 

src/ahriman/core/formatters/status_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.build_status import BuildStatus
 
 

src/ahriman/core/formatters/tree_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.package import Package
 from ahriman.models.property import Property
 

src/ahriman/core/formatters/update_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.package import Package
 from ahriman.models.property import Property
 

src/ahriman/core/formatters/user_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.property import Property
 from ahriman.models.user import User
 

src/ahriman/core/formatters/validation_printer.py

@@ -20,7 +20,7 @@
 from collections.abc import Generator
 from typing import Any
 
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.property import Property
 
 

src/ahriman/core/formatters/version_printer.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from ahriman.core.formatters import StringPrinter
+from ahriman.core.formatters.string_printer import StringPrinter
 from ahriman.models.property import Property
 
 

src/ahriman/core/report/remote_call.py

@@ -81,7 +81,7 @@ class RemoteCall(Report):
             bool: True in case if remote process is alive and False otherwise
         """
         try:
-            response = self.client.make_request("GET", f"/api/v1/service/process/{process_id}")
+            response = self.client.make_request("GET", f"{self.client.address}/api/v1/service/process/{process_id}")
         except requests.HTTPError as ex:
             status_code = ex.response.status_code if ex.response is not None else None
             if status_code == 404:
@@ -100,7 +100,7 @@ class RemoteCall(Report):
         Returns:
             str: remote process id
         """
-        response = self.client.make_request("POST", "/api/v1/service/update",
+        response = self.client.make_request("POST", f"{self.client.address}/api/v1/service/update",
                                             params=self.repository_id.query(),
                                             json={
                                                 "aur": self.update_aur,

src/ahriman/core/repository/executor.py

@@ -25,45 +25,20 @@ from tempfile import TemporaryDirectory
 
 from ahriman.core.build_tools.task import Task
 from ahriman.core.repository.cleaner import Cleaner
+from ahriman.core.repository.package_info import PackageInfo
 from ahriman.core.util import safe_filename
+from ahriman.models.changes import Changes
 from ahriman.models.package import Package
 from ahriman.models.package_description import PackageDescription
 from ahriman.models.packagers import Packagers
 from ahriman.models.result import Result
 
 
-class Executor(Cleaner):
+class Executor(PackageInfo, Cleaner):
     """
     trait for common repository update processes
     """
 
-    def load_archives(self, packages: Iterable[Path]) -> list[Package]:
-        """
-        load packages from list of archives
-
-        Args:
-            packages(Iterable[Path]): paths to package archives
-
-        Returns:
-            list[Package]: list of read packages
-
-        Raises:
-            NotImplementedError: not implemented method
-        """
-        raise NotImplementedError
-
-    def packages(self) -> list[Package]:
-        """
-        generate list of repository packages
-
-        Returns:
-            list[Package]: list of packages properties
-
-        Raises:
-            NotImplementedError: not implemented method
-        """
-        raise NotImplementedError
-
     def process_build(self, updates: Iterable[Package], packagers: Packagers | None = None, *,
                       bump_pkgrel: bool = False) -> Result:
         """
@@ -78,16 +53,18 @@ class Executor(Cleaner):
         Returns:
             Result: build result
         """
-        def build_single(package: Package, local_path: Path, packager_id: str | None) -> None:
+        def build_single(package: Package, local_path: Path, packager_id: str | None) -> str | None:
             self.reporter.set_building(package.base)
             task = Task(package, self.configuration, self.architecture, self.paths)
             local_version = local_versions.get(package.base) if bump_pkgrel else None
-            task.init(local_path, self.database, local_version)
+            commit_sha = task.init(local_path, self.database, local_version)
             built = task.build(local_path, PACKAGER=packager_id)
             for src in built:
                 dst = self.paths.packages / src.name
                 shutil.move(src, dst)
 
+            return commit_sha
+
         packagers = packagers or Packagers()
         local_versions = {package.base: package.version for package in self.packages()}
 
@@ -97,7 +74,9 @@ class Executor(Cleaner):
                     TemporaryDirectory(ignore_cleanup_errors=True) as dir_name:
                 try:
                     packager = self.packager(packagers, single.base)
-                    build_single(single, Path(dir_name), packager.packager_id)
+                    last_commit_sha = build_single(single, Path(dir_name), packager.packager_id)
+                    # clear changes and update commit hash
+                    self.reporter.package_changes_set(single.base, Changes(last_commit_sha))
                     result.add_updated(single)
                 except Exception:
                     self.reporter.set_failed(single.base)
@@ -122,6 +101,7 @@ class Executor(Cleaner):
                 self.database.build_queue_clear(package_base)
                 self.database.patches_remove(package_base, [])
                 self.database.logs_remove(package_base, None)
+                self.database.changes_remove(package_base)
                 self.reporter.package_remove(package_base)  # we only update status page in case of base removal
             except Exception:
                 self.logger.exception("could not remove base %s", package_base)

src/ahriman/core/repository/package_info.py

@@ -0,0 +1,126 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from collections.abc import Iterable
+from pathlib import Path
+from tempfile import TemporaryDirectory
+
+from ahriman.core.build_tools.sources import Sources
+from ahriman.core.repository.repository_properties import RepositoryProperties
+from ahriman.core.util import package_like
+from ahriman.models.changes import Changes
+from ahriman.models.package import Package
+
+
+class PackageInfo(RepositoryProperties):
+    """
+    handler for the package information
+    """
+
+    def load_archives(self, packages: Iterable[Path]) -> list[Package]:
+        """
+        load packages from list of archives
+
+        Args:
+            packages(Iterable[Path]): paths to package archives
+
+        Returns:
+            list[Package]: list of read packages
+        """
+        sources = self.database.remotes_get()
+
+        result: dict[str, Package] = {}
+        # we are iterating over bases, not single packages
+        for full_path in packages:
+            try:
+                local = Package.from_archive(full_path, self.pacman)
+                if (source := sources.get(local.base)) is not None:
+                    local.remote = source
+
+                current = result.setdefault(local.base, local)
+                if current.version != local.version:
+                    # force version to max of them
+                    self.logger.warning("version of %s differs, found %s and %s",
+                                        current.base, current.version, local.version)
+                    if current.is_outdated(local, self.paths, calculate_version=False):
+                        current.version = local.version
+                current.packages.update(local.packages)
+            except Exception:
+                self.logger.exception("could not load package from %s", full_path)
+        return list(result.values())
+
+    def package_changes(self, package: Package, last_commit_sha: str | None) -> Changes:
+        """
+        extract package change for the package since last commit if available
+
+        Args:
+            package(Package): package properties
+            last_commit_sha(str | None): last known commit hash
+
+        Returns:
+            Changes: changes if available
+        """
+        with TemporaryDirectory(ignore_cleanup_errors=True) as dir_name:
+            dir_path = Path(dir_name)
+            current_commit_sha = Sources.load(dir_path, package, self.database.patches_get(package.base), self.paths)
+
+            changes: str | None = None
+            if current_commit_sha != last_commit_sha:
+                changes = Sources.changes(dir_path, last_commit_sha)
+
+            return Changes(last_commit_sha, changes)
+
+    def packages(self) -> list[Package]:
+        """
+        generate list of repository packages
+
+        Returns:
+            list[Package]: list of packages properties
+        """
+        return self.load_archives(filter(package_like, self.paths.repository.iterdir()))
+
+    def packages_built(self) -> list[Path]:
+        """
+        get list of files in built packages directory
+
+        Returns:
+            list[Path]: list of filenames from the directory
+        """
+        return list(filter(package_like, self.paths.packages.iterdir()))
+
+    def packages_depend_on(self, packages: list[Package], depends_on: Iterable[str] | None) -> list[Package]:
+        """
+        extract list of packages which depends on specified package
+
+        Args:
+            packages(list[Package]): list of packages to be filtered
+            depends_on(Iterable[str] | None): dependencies of the packages
+
+        Returns:
+            list[Package]: list of repository packages which depend on specified packages
+        """
+        if depends_on is None:
+            return packages  # no list provided extract everything by default
+        depends_on = set(depends_on)
+
+        return [
+            package
+            for package in packages
+            if depends_on.intersection(package.full_depends(self.pacman, packages))
+        ]

src/ahriman/core/repository/repository.py

@@ -17,8 +17,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from collections.abc import Iterable
-from pathlib import Path
 from typing import Self
 
 from ahriman.core import _Context, context
@@ -28,9 +26,7 @@ from ahriman.core.database import SQLite
 from ahriman.core.repository.executor import Executor
 from ahriman.core.repository.update_handler import UpdateHandler
 from ahriman.core.sign.gpg import GPG
-from ahriman.core.util import package_like
 from ahriman.models.context_key import ContextKey
-from ahriman.models.package import Package
 from ahriman.models.pacman_synchronization import PacmanSynchronization
 from ahriman.models.repository_id import RepositoryId
 
@@ -101,74 +97,3 @@ class Repository(Executor, UpdateHandler):
         ctx.set(ContextKey("repository", type(self)), self)
 
         context.set(ctx)
-
-    def load_archives(self, packages: Iterable[Path]) -> list[Package]:
-        """
-        load packages from list of archives
-
-        Args:
-            packages(Iterable[Path]): paths to package archives
-
-        Returns:
-            list[Package]: list of read packages
-        """
-        sources = self.database.remotes_get()
-
-        result: dict[str, Package] = {}
-        # we are iterating over bases, not single packages
-        for full_path in packages:
-            try:
-                local = Package.from_archive(full_path, self.pacman)
-                if (source := sources.get(local.base)) is not None:
-                    local.remote = source
-
-                current = result.setdefault(local.base, local)
-                if current.version != local.version:
-                    # force version to max of them
-                    self.logger.warning("version of %s differs, found %s and %s",
-                                        current.base, current.version, local.version)
-                    if current.is_outdated(local, self.paths, calculate_version=False):
-                        current.version = local.version
-                current.packages.update(local.packages)
-            except Exception:
-                self.logger.exception("could not load package from %s", full_path)
-        return list(result.values())
-
-    def packages(self) -> list[Package]:
-        """
-        generate list of repository packages
-
-        Returns:
-            list[Package]: list of packages properties
-        """
-        return self.load_archives(filter(package_like, self.paths.repository.iterdir()))
-
-    def packages_built(self) -> list[Path]:
-        """
-        get list of files in built packages directory
-
-        Returns:
-            list[Path]: list of filenames from the directory
-        """
-        return list(filter(package_like, self.paths.packages.iterdir()))
-
-    def packages_depend_on(self, packages: list[Package], depends_on: Iterable[str] | None) -> list[Package]:
-        """
-        extract list of packages which depends on specified package
-
-        Args:
-            packages(list[Package]): list of packages to be filtered
-            depends_on(Iterable[str] | None): dependencies of the packages
-
-        Returns:
-            list[Package]: list of repository packages which depend on specified packages
-        """
-        if depends_on is None:
-            return packages  # no list provided extract everything by default
-        depends_on = set(depends_on)
-
-        return [
-            package
-            for package in packages
-            if depends_on.intersection(package.full_depends(self.pacman, packages))
-        ]

src/ahriman/core/repository/update_handler.py

@@ -22,28 +22,17 @@ from collections.abc import Iterable
 from ahriman.core.build_tools.sources import Sources
 from ahriman.core.exceptions import UnknownPackageError
 from ahriman.core.repository.cleaner import Cleaner
+from ahriman.core.repository.package_info import PackageInfo
 from ahriman.models.package import Package
 from ahriman.models.package_source import PackageSource
 from ahriman.models.remote_source import RemoteSource
 
 
-class UpdateHandler(Cleaner):
+class UpdateHandler(PackageInfo, Cleaner):
     """
     trait to get package update list
     """
 
-    def packages(self) -> list[Package]:
-        """
-        generate list of repository packages
-
-        Returns:
-            list[Package]: list of packages properties
-
-        Raises:
-            NotImplementedError: not implemented method
-        """
-        raise NotImplementedError
-
     def updates_aur(self, filter_packages: Iterable[str], *, vcs: bool) -> list[Package]:
         """
         check AUR for updates

src/ahriman/core/spawn.py

@@ -174,7 +174,7 @@ class Spawn(Thread, LazyLogging):
         return self._spawn_process(repository_id, "service-key-import", key, **kwargs)
 
     def packages_add(self, repository_id: RepositoryId, packages: Iterable[str], username: str | None, *,
-                     patches: list[PkgbuildPatch], now: bool) -> str:
+                     patches: list[PkgbuildPatch], now: bool, increment: bool, refresh: bool) -> str:
         """
         add packages
 
@@ -184,19 +184,26 @@ class Spawn(Thread, LazyLogging):
             username(str | None): optional override of username for build process
             patches(list[PkgbuildPatch]): list of patches to be passed
             now(bool): build packages now
+            increment(bool): increment pkgrel on conflict
+            refresh(bool): refresh pacman database before process
 
         Returns:
             str: spawned process identifier
         """
-        kwargs: dict[str, str | list[str] | None] = {"username": username}
+        kwargs: dict[str, str | list[str] | None] = {
+            "username": username,
+            "variable": [patch.serialize() for patch in patches],
+            self.boolean_action_argument("increment", increment): "",
+        }
         if now:
             kwargs["now"] = ""
-        if patches:
-            kwargs["variable"] = [patch.serialize() for patch in patches]
+        if refresh:
+            kwargs["refresh"] = ""
 
         return self._spawn_process(repository_id, "package-add", *packages, **kwargs)
 
-    def packages_rebuild(self, repository_id: RepositoryId, depends_on: str, username: str | None) -> str:
+    def packages_rebuild(self, repository_id: RepositoryId, depends_on: str, username: str | None, *,
+                         increment: bool) -> str:
         """
         rebuild packages which depend on the specified package
 
@@ -204,11 +211,16 @@ class Spawn(Thread, LazyLogging):
             repository_id(RepositoryId): repository unique identifier
             depends_on(str): packages dependency
             username(str | None): optional override of username for build process
+            increment(bool): increment pkgrel on conflict
 
         Returns:
             str: spawned process identifier
         """
-        kwargs = {"depends-on": depends_on, "username": username}
+        kwargs = {
+            "depends-on": depends_on,
+            "username": username,
+            self.boolean_action_argument("increment", increment): "",
+        }
         return self._spawn_process(repository_id, "repo-rebuild", **kwargs)
 
     def packages_remove(self, repository_id: RepositoryId, packages: Iterable[str]) -> str:
@@ -225,7 +237,7 @@ class Spawn(Thread, LazyLogging):
         return self._spawn_process(repository_id, "package-remove", *packages)
 
     def packages_update(self, repository_id: RepositoryId, username: str | None, *,
-                        aur: bool, local: bool, manual: bool) -> str:
+                        aur: bool, local: bool, manual: bool, increment: bool, refresh: bool) -> str:
         """
         run full repository update
 
@@ -235,6 +247,8 @@ class Spawn(Thread, LazyLogging):
             aur(bool): check for aur updates
             local(bool): check for local packages updates
             manual(bool): check for manual packages
+            increment(bool): increment pkgrel on conflict
+            refresh(bool): refresh pacman database before process
 
         Returns:
             str: spawned process identifier
@@ -244,7 +258,11 @@ class Spawn(Thread, LazyLogging):
             self.boolean_action_argument("aur", aur): "",
             self.boolean_action_argument("local", local): "",
             self.boolean_action_argument("manual", manual): "",
+            self.boolean_action_argument("increment", increment): "",
         }
+        if refresh:
+            kwargs["refresh"] = ""
+
         return self._spawn_process(repository_id, "repo-update", **kwargs)
 
     def run(self) -> None:

src/ahriman/core/status/client.py

@@ -23,6 +23,7 @@ import logging
 
 from ahriman.core.configuration import Configuration
 from ahriman.models.build_status import BuildStatus, BuildStatusEnum
+from ahriman.models.changes import Changes
 from ahriman.models.internal_status import InternalStatus
 from ahriman.models.log_record_id import LogRecordId
 from ahriman.models.package import Package
@@ -75,6 +76,28 @@ class Client:
             status(BuildStatusEnum): current package build status
         """
 
+    def package_changes_get(self, package_base: str) -> Changes:
+        """
+        get package changes
+
+        Args:
+            package_base(str): package base to retrieve
+
+        Returns:
+            Changes: package changes if available and empty object otherwise
+        """
+        del package_base
+        return Changes()
+
+    def package_changes_set(self, package_base: str, changes: Changes) -> None:
+        """
+        update package changes
+
+        Args:
+            package_base(str): package base to update
+            changes(Changes): changes descriptor
+        """
+
     def package_get(self, package_base: str | None) -> list[tuple[Package, BuildStatus]]:
         """
         get package status

src/ahriman/core/status/watcher.py

@@ -21,6 +21,7 @@ from ahriman.core.database import SQLite
 from ahriman.core.exceptions import UnknownPackageError
 from ahriman.core.log import LazyLogging
 from ahriman.models.build_status import BuildStatus, BuildStatusEnum
+from ahriman.models.changes import Changes
 from ahriman.models.log_record_id import LogRecordId
 from ahriman.models.package import Package
 from ahriman.models.pkgbuild_patch import PkgbuildPatch
@@ -113,6 +114,23 @@ class Watcher(LazyLogging):
         self._last_log_record_id = log_record_id
         self.database.logs_insert(log_record_id, created, record, self.repository_id)
 
+    def package_changes_get(self, package_base: str) -> Changes:
+        """
+        retrieve package changes
+
+        Args:
+            package_base(str): package base
+
+        Returns:
+            Changes: package changes if available
+
+        Raises:
+            UnknownPackageError: if no package found
+        """
+        if package_base not in self.known:
+            raise UnknownPackageError(package_base)
+        return self.database.changes_get(package_base, self.repository_id)
+
     def package_get(self, package_base: str) -> tuple[Package, BuildStatus]:
         """
         get current package base build status

src/ahriman/core/status/web_client.py

@@ -26,6 +26,7 @@ from ahriman.core.configuration import Configuration
 from ahriman.core.http import SyncAhrimanClient
 from ahriman.core.status.client import Client
 from ahriman.models.build_status import BuildStatus, BuildStatusEnum
+from ahriman.models.changes import Changes
 from ahriman.models.internal_status import InternalStatus
 from ahriman.models.log_record_id import LogRecordId
 from ahriman.models.package import Package
@@ -83,6 +84,18 @@ class WebClient(Client, SyncAhrimanClient):
             address = f"http://{host}:{port}"
         return "web", address
 
+    def _changes_url(self, package_base: str) -> str:
+        """
+        get url for the changes api
+
+        Args:
+            package_base(str): package base
+
+        Returns:
+            str: full url for web service for logs
+        """
+        return f"{self.address}/api/v1/packages/{package_base}/changes"
+
     def _logs_url(self, package_base: str) -> str:
         """
         get url for the logs api
@@ -134,6 +147,37 @@ class WebClient(Client, SyncAhrimanClient):
             self.make_request("POST", self._package_url(package.base),
                               params=self.repository_id.query(), json=payload)
 
+    def package_changes_get(self, package_base: str) -> Changes:
+        """
+        get package changes
+
+        Args:
+            package_base(str): package base to retrieve
+
+        Returns:
+            Changes: package changes if available and empty object otherwise
+        """
+        with contextlib.suppress(Exception):
+            response = self.make_request("GET", self._changes_url(package_base),
+                                         params=self.repository_id.query())
+            response_json = response.json()
+
+            return Changes.from_json(response_json)
+
+        return Changes()
+
+    def package_changes_set(self, package_base: str, changes: Changes) -> None:
+        """
+        update package changes
+
+        Args:
+            package_base(str): package base to update
+            changes(Changes): changes descriptor
+        """
+        with contextlib.suppress(Exception):
+            self.make_request("POST", self._changes_url(package_base),
+                              params=self.repository_id.query(), json=changes.view())
+
     def package_get(self, package_base: str | None) -> list[tuple[Package, BuildStatus]]:
         """
         get package status

src/ahriman/core/tree.py

@@ -148,6 +148,8 @@ class Tree:
             sorted(part, key=lambda leaf: leaf.package.base)
             for part in partitions if part
         ]
+        if not partitions:  # nothing to balance
+            return partitions
 
         while True:
             min_part, max_part = minmax(partitions, key=len)
@@ -182,7 +184,7 @@ class Tree:
 
         Returns:
             list[list[Package]]: list of packages lists based on their dependencies. The amount of elements in each
-                sublist is less or equal to ``count``
+            sublist is less or equal to ``count``
 
         Raises:
             PartitionError: in case if it is impossible to divide tree by specified amount of partitions

src/ahriman/models/changes.py

@@ -0,0 +1,71 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from dataclasses import dataclass, fields
+from typing import Any, Self
+
+from ahriman.core.util import dataclass_view, filter_json
+
+
+@dataclass(frozen=True)
+class Changes:
+    """
+    package source files changes holder
+
+    Attributes:
+        last_commit_sha(str | None): last commit hash
+        changes(str | None): package change since the last commit if available
+    """
+
+    last_commit_sha: str | None = None
+    changes: str | None = None
+
+    @property
+    def is_empty(self) -> bool:
+        """
+        validate that changes are not empty
+
+        Returns:
+            bool: ``True`` in case if changes are not set and ``False`` otherwise
+        """
+        return self.changes is None
+
+    @classmethod
+    def from_json(cls, dump: dict[str, Any]) -> Self:
+        """
+        construct changes from the json dump
+
+        Args:
+            dump(dict[str, Any]): json dump body
+
+        Returns:
+            Self: changes object
+        """
+        # filter to only known fields
+        known_fields = [pair.name for pair in fields(cls)]
+        return cls(**filter_json(dump, known_fields))
+
+    def view(self) -> dict[str, Any]:
+        """
+        generate json change view
+
+        Returns:
+            dict[str, Any]: json-friendly dictionary
+        """
+        return dataclass_view(self)

src/ahriman/models/package.py

@@ -505,7 +505,7 @@ class Package(LazyLogging):
 
         Returns:
             bool: True in case if package was built after the specified date and False otherwise. In case if build date
-                is not set by any of packages, it returns False
+            is not set by any of packages, it returns False
         """
         return any(
             package.build_date > timestamp

src/ahriman/models/repository_paths.py

@@ -75,7 +75,7 @@ class RepositoryPaths(LazyLogging):
 
         Returns:
             Path: relative path which contains only architecture segment in case if legacy tree is used and repository
-                name and architecture otherwise
+            name and architecture otherwise
         """
         if not self._force_current_tree:
             if (self._repository_root / self.repository_id.architecture).is_dir():
@@ -181,7 +181,7 @@ class RepositoryPaths(LazyLogging):
 
         Returns:
             set[str]: list of repository names for which there is created tree. Returns empty set in case if repository
-                is loaded in legacy mode
+            is loaded in legacy mode
         """
         # simply walk through the root. In case if there are subdirectories, emit the name
         def walk(paths: RepositoryPaths) -> Generator[str, None, None]:

src/ahriman/models/waiter.py

@@ -49,7 +49,7 @@ class Waiter:
 
         Returns:
             bool: True in case current monotonic time is more than :attr:`start_time` and :attr:`wait_timeout`
-                doesn't equal to 0
+            doesn't equal to 0
         """
         since_start: float = time.monotonic() - self.start_time
         return self.wait_timeout != 0 and since_start > self.wait_timeout

src/ahriman/models/worker.py

@@ -0,0 +1,41 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from dataclasses import dataclass, field
+from urllib.parse import urlparse
+
+
+@dataclass(frozen=True)
+class Worker:
+    """
+    worker descriptor
+
+    Attributes:
+        address(str): worker address to be reachable outside
+        identifier(str): worker unique identifier. If none set it will be automatically generated from the address
+    """
+
+    address: str
+    identifier: str = field(default="", kw_only=True)
+
+    def __post_init__(self) -> None:
+        """
+        update identifier based on settings
+        """
+        object.__setattr__(self, "identifier", self.identifier or urlparse(self.address).netloc)

src/ahriman/web/middlewares/auth_handler.py

@@ -17,7 +17,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-import aiohttp_security  # type: ignore[import-untyped]
+import aiohttp_security
 import socket
 import types
 
@@ -25,6 +25,7 @@ from aiohttp.web import Application, Request, StaticResource, StreamResponse, mi
 from aiohttp_session import setup as setup_session
 from aiohttp_session.cookie_storage import EncryptedCookieStorage
 from cryptography import fernet
+from enum import Enum
 
 from ahriman.core.auth import Auth
 from ahriman.core.configuration import Configuration
@@ -50,6 +51,7 @@ class _AuthorizationPolicy(aiohttp_security.AbstractAuthorizationPolicy):
         Args:
             validator(Auth): authorization module instance
         """
+        aiohttp_security.AbstractAuthorizationPolicy.__init__(self)
         self.validator = validator
 
     async def authorized_userid(self, identity: str) -> str | None:
@@ -64,18 +66,21 @@ class _AuthorizationPolicy(aiohttp_security.AbstractAuthorizationPolicy):
         """
         return identity if await self.validator.known_username(identity) else None
 
-    async def permits(self, identity: str, permission: UserAccess, context: str | None = None) -> bool:
+    async def permits(self, identity: str | None, permission: str | Enum, context: str | None = None) -> bool:
         """
         check user permissions
 
         Args:
-            identity(str): username
-            permission(UserAccess): requested permission level
+            identity(str | None): username
+            permission(str | Enum): requested permission level
             context(str | None, optional): URI request path (Default value = None)
 
         Returns:
             bool: True in case if user is allowed to perform this request and False otherwise
         """
+        # some methods for type checking and parent class compatibility
+        if identity is None or not isinstance(permission, UserAccess):
+            return False  # no identity provided or invalid access rights requested
         return await self.validator.verify_access(identity, permission, context)
 
 

src/ahriman/web/routes.py

@@ -25,18 +25,20 @@ from pkgutil import ModuleInfo, iter_modules
 from types import ModuleType
 from typing import Any, Type, TypeGuard
 
+from ahriman.core.configuration import Configuration
 from ahriman.web.views.base import BaseView
 
 
 __all__ = ["setup_routes"]
 
 
-def _dynamic_routes(module_root: Path) -> dict[str, Type[View]]:
+def _dynamic_routes(module_root: Path, configuration: Configuration) -> dict[str, Type[View]]:
     """
     extract dynamic routes based on views
 
     Args:
         module_root(Path): root module path with views
+        configuration(Configuration): configuration instance
 
     Returns:
         dict[str, Type[View]]: map of the route to its view
@@ -52,7 +54,9 @@ def _dynamic_routes(module_root: Path) -> dict[str, Type[View]]:
             view = getattr(module, attribute_name)
             if not is_base_view(view):
                 continue
-            routes.update([(route, view) for route in view.ROUTES])
+
+            view_routes = view.routes(configuration)
+            routes.update([(route, view) for route in view_routes])
 
     return routes
 
@@ -101,16 +105,16 @@ def _modules(module_root: Path) -> Generator[ModuleInfo, None, None]:
             yield module_info
 
 
-def setup_routes(application: Application, static_path: Path) -> None:
+def setup_routes(application: Application, configuration: Configuration) -> None:
     """
     setup all defined routes
 
     Args:
         application(Application): web application instance
-        static_path(Path): path to static files directory
+        configuration(Configuration): configuration instance
     """
-    application.router.add_static("/static", static_path, follow_symlinks=True)
+    application.router.add_static("/static", configuration.getpath("web", "static_path"), follow_symlinks=True)
 
-    views = Path(__file__).parent / "views"
-    for route, view in _dynamic_routes(views).items():
+    views_root = Path(__file__).parent / "views"
+    for route, view in _dynamic_routes(views_root, configuration).items():
         application.router.add_view(route, view)

src/ahriman/web/schemas/__init__.py

@@ -19,6 +19,8 @@
 #
 from ahriman.web.schemas.aur_package_schema import AURPackageSchema
 from ahriman.web.schemas.auth_schema import AuthSchema
+from ahriman.web.schemas.build_options_schema import BuildOptionsSchema
+from ahriman.web.schemas.changes_schema import ChangesSchema
 from ahriman.web.schemas.counters_schema import CountersSchema
 from ahriman.web.schemas.error_schema import ErrorSchema
 from ahriman.web.schemas.file_schema import FileSchema

src/ahriman/web/schemas/build_options_schema.py

@@ -0,0 +1,36 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from marshmallow import Schema, fields
+
+
+class BuildOptionsSchema(Schema):
+    """
+    request build options schema
+    """
+
+    increment = fields.Boolean(dump_default=True, metadata={
+        "description": "Increment pkgrel on conflicts",
+    })
+    packager = fields.String(metadata={
+        "description": "Packager identity if applicable",
+    })
+    refresh = fields.Boolean(dump_default=True, metadata={
+        "description": "Refresh pacman database"
+    })

src/ahriman/web/schemas/changes_schema.py

@@ -0,0 +1,34 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from marshmallow import Schema, fields
+
+
+class ChangesSchema(Schema):
+    """
+    response package changes schema
+    """
+
+    last_commit_sha = fields.String(metadata={
+        "description": "Last recorded commit hash",
+        "example": "f1875edca1eb8fc0e55c41d1cae5fa05b6b7c6",
+    })
+    changes = fields.String(metadata={
+        "description": "Package changes in patch format",
+    })

src/ahriman/web/schemas/package_names_schema.py

@@ -17,10 +17,12 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from marshmallow import Schema, fields
+from marshmallow import fields
+
+from ahriman.web.schemas.build_options_schema import BuildOptionsSchema
 
 
-class PackageNamesSchema(Schema):
+class PackageNamesSchema(BuildOptionsSchema):
     """
     request package names schema
     """

src/ahriman/web/schemas/update_flags_schema.py

@@ -17,20 +17,22 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from marshmallow import Schema, fields
+from marshmallow import fields
+
+from ahriman.web.schemas.build_options_schema import BuildOptionsSchema
 
 
-class UpdateFlagsSchema(Schema):
+class UpdateFlagsSchema(BuildOptionsSchema):
     """
     update flags request schema
     """
 
-    aur = fields.Bool(dump_default=True, metadata={
+    aur = fields.Boolean(dump_default=True, metadata={
         "description": "Check AUR for updates",
     })
-    local = fields.Bool(dump_default=True, metadata={
+    local = fields.Boolean(dump_default=True, metadata={
         "description": "Check local packages for updates",
     })
-    manual = fields.Bool(dump_default=True, metadata={
+    manual = fields.Boolean(dump_default=True, metadata={
         "description": "Check manually built packages",
     })

src/ahriman/web/views/base.py

@@ -20,7 +20,7 @@
 from aiohttp_cors import CorsViewMixin  # type: ignore[import-untyped]
 from aiohttp.web import HTTPBadRequest, HTTPNotFound, Request, StreamResponse, View
 from collections.abc import Awaitable, Callable
-from typing import Any, TypeVar
+from typing import TypeVar
 
 from ahriman.core.auth import Auth
 from ahriman.core.configuration import Configuration
@@ -115,6 +115,21 @@ class BaseView(View, CorsViewMixin):
         permission: UserAccess = getattr(cls, f"{method}_PERMISSION", UserAccess.Full)
         return permission
 
+    @classmethod
+    def routes(cls, configuration: Configuration) -> list[str]:
+        """
+        extract routes list for the view
+
+        Args:
+            configuration(Configuration): configuration instance
+
+        Returns:
+            list[str]: list of routes defined for the view. By default, it tries to read :attr:`ROUTES` option if set
+            and returns empty list otherwise
+        """
+        del configuration
+        return cls.ROUTES
+
     @staticmethod
     def get_non_empty(extractor: Callable[[str], T | None], key: str) -> T:
         """
@@ -138,49 +153,8 @@ class BaseView(View, CorsViewMixin):
             raise KeyError(f"Key {key} is missing or empty") from None
         return value
 
-    async def data_as_json(self, list_keys: list[str]) -> dict[str, Any]:
-        """
-        extract form data and convert it to json object
-
-        Args:
-            list_keys(list[str]): list of keys which must be forced to list from form data
-
-        Returns:
-            dict[str, Any]: form data converted to json. In case if a key is found multiple times
-                it will be returned as list
-        """
-        raw = await self.request.post()
-        json: dict[str, Any] = {}
-        for key, value in raw.items():
-            if key in json and isinstance(json[key], list):
-                json[key].append(value)
-            elif key in json:
-                json[key] = [json[key], value]
-            elif key in list_keys:
-                json[key] = [value]
-            else:
-                json[key] = value
-        return json
-
-    async def extract_data(self, list_keys: list[str] | None = None) -> dict[str, Any]:
-        """
-        extract json data from either json or form data
-
-        Args:
-            list_keys(list[str] | None, optional): optional list of keys which must be forced to list from form data
-                (Default value = None)
-
-        Returns:
-            dict[str, Any]: raw json object or form data converted to json
-        """
-        try:
-            json: dict[str, Any] = await self.request.json()
-            return json
-        except ValueError:
-            return await self.data_as_json(list_keys or [])
-
     # pylint: disable=not-callable,protected-access
-    async def head(self) -> StreamResponse:  # type: ignore[return]
+    async def head(self) -> StreamResponse:
         """
         HEAD method implementation based on the result of GET method
 
@@ -263,6 +237,13 @@ class BaseView(View, CorsViewMixin):
         Returns:
             str | None: authorized username if any and None otherwise (e.g. if authorization is disabled)
         """
+        try:  # try to read from payload
+            data: dict[str, str] = await self.request.json()  # technically it is not, but we only need str here
+            if (packager := data.get("packager")) is not None:
+                return packager
+        except Exception:
+            self.request.app.logger.exception("could not extract json data for packager")
+
         policy = self.request.app.get("identity")
         if policy is not None:
             identity: str = await policy.identify(self.request)

src/ahriman/web/views/status_view_guard.py

@@ -0,0 +1,44 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+from ahriman.core.configuration import Configuration
+
+
+class StatusViewGuard:
+    """
+    helper for check if status routes are enabled
+    """
+
+    ROUTES: list[str]
+
+    @classmethod
+    def routes(cls, configuration: Configuration) -> list[str]:
+        """
+        extract routes list for the view
+
+        Args:
+            configuration(Configuration): configuration instance
+
+        Returns:
+            list[str]: list of routes defined for the view. By default, it tries to read :attr:`ROUTES` option if set
+            and returns empty list otherwise
+        """
+        if configuration.getboolean("web", "service_only", fallback=False):
+            return []
+        return cls.ROUTES

src/ahriman/web/views/v1/service/add.py

@@ -66,7 +66,7 @@ class AddView(BaseView):
             HTTPBadRequest: if bad data is supplied
         """
         try:
-            data = await self.extract_data(["packages", "patches"])
+            data = await self.request.json()
             packages = self.get_non_empty(lambda key: [package for package in data[key] if package], "packages")
             patches = [PkgbuildPatch(patch["key"], patch.get("value", "")) for patch in data.get("patches", [])]
         except Exception as ex:
@@ -74,6 +74,14 @@ class AddView(BaseView):
 
         repository_id = self.repository_id()
         username = await self.username()
-        process_id = self.spawner.packages_add(repository_id, packages, username, patches=patches, now=True)
+        process_id = self.spawner.packages_add(
+            repository_id,
+            packages,
+            username,
+            patches=patches,
+            now=True,
+            increment=data.get("increment", True),
+            refresh=data.get("refresh", False),
+        )
 
         return json_response({"process_id": process_id})

src/ahriman/web/views/v1/service/pgp.py

@@ -104,9 +104,8 @@ class PGPView(BaseView):
         Raises:
             HTTPBadRequest: if bad data is supplied
         """
-        data = await self.extract_data()
-
         try:
+            data = await self.request.json()
             key = self.get_non_empty(data.get, "key")
         except Exception as ex:
             raise HTTPBadRequest(reason=str(ex))

src/ahriman/web/views/v1/service/rebuild.py

@@ -65,7 +65,7 @@ class RebuildView(BaseView):
             HTTPBadRequest: if bad data is supplied
         """
         try:
-            data = await self.extract_data(["packages"])
+            data = await self.request.json()
             packages = self.get_non_empty(lambda key: [package for package in data[key] if package], "packages")
             depends_on = next(iter(packages))
         except Exception as ex:
@@ -73,6 +73,11 @@ class RebuildView(BaseView):
 
         repository_id = self.repository_id()
         username = await self.username()
-        process_id = self.spawner.packages_rebuild(repository_id, depends_on, username)
+        process_id = self.spawner.packages_rebuild(
+            repository_id,
+            depends_on,
+            username,
+            increment=data.get("increment", True),
+        )
 
         return json_response({"process_id": process_id})

src/ahriman/web/views/v1/service/remove.py

@@ -65,7 +65,7 @@ class RemoveView(BaseView):
             HTTPBadRequest: if bad data is supplied
         """
         try:
-            data = await self.extract_data(["packages"])
+            data = await self.request.json()
             packages = self.get_non_empty(lambda key: [package for package in data[key] if package], "packages")
         except Exception as ex:
             raise HTTPBadRequest(reason=str(ex))

src/ahriman/web/views/v1/service/request.py

@@ -66,7 +66,7 @@ class RequestView(BaseView):
             HTTPBadRequest: if bad data is supplied
         """
         try:
-            data = await self.extract_data(["packages", "patches"])
+            data = await self.request.json()
             packages = self.get_non_empty(lambda key: [package for package in data[key] if package], "packages")
             patches = [PkgbuildPatch(patch["key"], patch.get("value", "")) for patch in data.get("patches", [])]
         except Exception as ex:
@@ -74,6 +74,14 @@ class RequestView(BaseView):
 
         username = await self.username()
         repository_id = self.repository_id()
-        process_id = self.spawner.packages_add(repository_id, packages, username, patches=patches, now=False)
+        process_id = self.spawner.packages_add(
+            repository_id,
+            packages,
+            username,
+            patches=patches,
+            now=False,
+            increment=False,  # no-increment doesn't work here
+            refresh=False,  # refresh doesn't work here
+        )
 
         return json_response({"process_id": process_id})

src/ahriman/web/views/v1/service/update.py

@@ -65,7 +65,7 @@ class UpdateView(BaseView):
             HTTPBadRequest: if bad data is supplied
         """
         try:
-            data = await self.extract_data()
+            data = await self.request.json()
         except Exception as ex:
             raise HTTPBadRequest(reason=str(ex))
 
@@ -77,6 +77,8 @@ class UpdateView(BaseView):
             aur=data.get("aur", True),
             local=data.get("local", True),
             manual=data.get("manual", True),
+            increment=data.get("increment", True),
+            refresh=data.get("refresh", False),
         )
 
         return json_response({"process_id": process_id})

src/ahriman/web/views/v1/status/changes.py

@@ -0,0 +1,119 @@
+#
+# Copyright (c) 2021-2023 ahriman team.
+#
+# This file is part of ahriman
+# (see https://github.com/arcan1s/ahriman).
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+import aiohttp_apispec  # type: ignore[import-untyped]
+
+from aiohttp.web import HTTPBadRequest, HTTPNoContent, HTTPNotFound, Response, json_response
+
+from ahriman.core.exceptions import UnknownPackageError
+from ahriman.models.changes import Changes
+from ahriman.models.user_access import UserAccess
+from ahriman.web.schemas import AuthSchema, ChangesSchema, ErrorSchema, PackageNameSchema, RepositoryIdSchema
+from ahriman.web.views.base import BaseView
+from ahriman.web.views.status_view_guard import StatusViewGuard
+
+
+class ChangesView(StatusViewGuard, BaseView):
+    """
+    package changes web view
+
+    Attributes:
+        GET_PERMISSION(UserAccess): (class attribute) get permissions of self
+        POST_PERMISSION(UserAccess): (class attribute) post permissions of self
+    """
+
+    GET_PERMISSION = UserAccess.Reporter
+    POST_PERMISSION = UserAccess.Full
+    ROUTES = ["/api/v1/packages/{package}/changes"]
+
+    @aiohttp_apispec.docs(
+        tags=["Packages"],
+        summary="Get package changes",
+        description="Retrieve package changes since the last build",
+        responses={
+            200: {"description": "Success response", "schema": ChangesSchema},
+            401: {"description": "Authorization required", "schema": ErrorSchema},
+            403: {"description": "Access is forbidden", "schema": ErrorSchema},
+            404: {"description": "Package base and/or repository are unknown", "schema": ErrorSchema},
+            500: {"description": "Internal server error", "schema": ErrorSchema},
+        },
+        security=[{"token": [GET_PERMISSION]}],
+    )
+    @aiohttp_apispec.cookies_schema(AuthSchema)
+    @aiohttp_apispec.match_info_schema(PackageNameSchema)
+    @aiohttp_apispec.querystring_schema(RepositoryIdSchema)
+    async def get(self) -> Response:
+        """
+        get package changes
+
+        Returns:
+            Response: 200 with package change on success
+
+        Raises:
+            HTTPNotFound: if package base is unknown
+        """
+        package_base = self.request.match_info["package"]
+
+        try:
+            changes = self.service().package_changes_get(package_base)
+        except UnknownPackageError:
+            raise HTTPNotFound(reason=f"Package {package_base} is unknown")
+
+        return json_response(changes.view())
+
+    @aiohttp_apispec.docs(
+        tags=["Packages"],
+        summary="Update package changes",
+        description="Update package changes to the new ones",
+        responses={
+            204: {"description": "Success response"},
+            400: {"description": "Bad data is supplied", "schema": ErrorSchema},
+            401: {"description": "Authorization required", "schema": ErrorSchema},
+            403: {"description": "Access is forbidden", "schema": ErrorSchema},
+            404: {"description": "Repository is unknown", "schema": ErrorSchema},
+            500: {"description": "Internal server error", "schema": ErrorSchema},
+        },
+        security=[{"token": [POST_PERMISSION]}],
+    )
+    @aiohttp_apispec.cookies_schema(AuthSchema)
+    @aiohttp_apispec.match_info_schema(PackageNameSchema)
+    @aiohttp_apispec.querystring_schema(RepositoryIdSchema)
+    @aiohttp_apispec.json_schema(ChangesSchema)
+    async def post(self) -> None:
+        """
+        insert new package changes
+
+        Raises:
+            HTTPBadRequest: if bad data is supplied
+            HTTPNoContent: in case of success response
+        """
+        package_base = self.request.match_info["package"]
+
+        try:
+            data = await self.request.json()
+            last_commit_sha = data.get("last_commit_sha")  # empty/null meant removal
+            change = data.get("changes")
+        except Exception as ex:
+            raise HTTPBadRequest(reason=str(ex))
+
+        changes = Changes(last_commit_sha, change)
+        repository_id = self.repository_id()
+        self.service(repository_id).database.changes_insert(package_base, changes, repository_id)
+
+        raise HTTPNoContent

src/ahriman/web/views/v1/status/logs.py

@@ -28,9 +28,10 @@ from ahriman.models.user_access import UserAccess
 from ahriman.web.schemas import AuthSchema, ErrorSchema, LogsSchema, PackageNameSchema, RepositoryIdSchema, \
     VersionedLogSchema
 from ahriman.web.views.base import BaseView
+from ahriman.web.views.status_view_guard import StatusViewGuard
 
 
-class LogsView(BaseView):
+class LogsView(StatusViewGuard, BaseView):
     """
     package logs web view
 
@@ -139,9 +140,9 @@ class LogsView(BaseView):
             HTTPNoContent: in case of success response
         """
         package_base = self.request.match_info["package"]
-        data = await self.extract_data()
 
         try:
+            data = await self.request.json()
             created = data["created"]
             record = data["message"]
             version = data["version"]

src/ahriman/web/views/v1/status/package.py

@@ -28,9 +28,10 @@ from ahriman.models.user_access import UserAccess
 from ahriman.web.schemas import AuthSchema, ErrorSchema, PackageNameSchema, PackageStatusSchema, \
     PackageStatusSimplifiedSchema, RepositoryIdSchema
 from ahriman.web.views.base import BaseView
+from ahriman.web.views.status_view_guard import StatusViewGuard
 
 
-class PackageView(BaseView):
+class PackageView(StatusViewGuard, BaseView):
     """
     package base specific web view
 
@@ -142,9 +143,9 @@ class PackageView(BaseView):
             HTTPNoContent: in case of success response
         """
         package_base = self.request.match_info["package"]
-        data = await self.extract_data()
 
         try:
+            data = await self.request.json()
             package = Package.from_json(data["package"]) if "package" in data else None
             status = BuildStatusEnum(data["status"])
         except Exception as ex:

src/ahriman/web/views/v1/status/packages.py

@@ -28,9 +28,10 @@ from ahriman.models.package import Package
 from ahriman.models.user_access import UserAccess
 from ahriman.web.schemas import AuthSchema, ErrorSchema, PackageStatusSchema, PaginationSchema, RepositoryIdSchema
 from ahriman.web.views.base import BaseView
+from ahriman.web.views.status_view_guard import StatusViewGuard
 
 
-class PackagesView(BaseView):
+class PackagesView(StatusViewGuard, BaseView):
     """
     global watcher view
 

src/ahriman/web/views/v1/status/patch.py

@@ -24,9 +24,10 @@ from aiohttp.web import HTTPNoContent, HTTPNotFound, Response, json_response
 from ahriman.models.user_access import UserAccess
 from ahriman.web.schemas import AuthSchema, ErrorSchema, PatchNameSchema, PatchSchema
 from ahriman.web.views.base import BaseView
+from ahriman.web.views.status_view_guard import StatusViewGuard
 
 
-class PatchView(BaseView):
+class PatchView(StatusViewGuard, BaseView):
     """
     package patch web view
 

src/ahriman/web/views/v1/status/patches.py

@@ -25,9 +25,10 @@ from ahriman.models.pkgbuild_patch import PkgbuildPatch
 from ahriman.models.user_access import UserAccess
 from ahriman.web.schemas import AuthSchema, ErrorSchema, PackageNameSchema, PatchSchema
 from ahriman.web.views.base import BaseView
+from ahriman.web.views.status_view_guard import StatusViewGuard
 
 
-class PatchesView(BaseView):
+class PatchesView(StatusViewGuard, BaseView):
     """
     package patches web view
 
@@ -95,9 +96,9 @@ class PatchesView(BaseView):
             HTTPNoContent: on success response
         """
         package_base = self.request.match_info["package"]
-        data = await self.extract_data()
 
         try:
+            data = await self.request.json()
             key = data["key"]
             value = data["value"]
         except Exception as ex:

src/ahriman/web/views/v1/status/status.py

@@ -28,9 +28,10 @@ from ahriman.models.internal_status import InternalStatus
 from ahriman.models.user_access import UserAccess
 from ahriman.web.schemas import AuthSchema, ErrorSchema, InternalStatusSchema, StatusSchema, RepositoryIdSchema
 from ahriman.web.views.base import BaseView
+from ahriman.web.views.status_view_guard import StatusViewGuard
 
 
-class StatusView(BaseView):
+class StatusView(StatusViewGuard, BaseView):
     """
     web service status web view
 
@@ -102,7 +103,7 @@ class StatusView(BaseView):
             HTTPNoContent: in case of success response
         """
         try:
-            data = await self.extract_data()
+            data = await self.request.json()
             status = BuildStatusEnum(data["status"])
         except Exception as ex:
             raise HTTPBadRequest(reason=str(ex))

src/ahriman/web/views/v1/user/login.py

@@ -19,7 +19,7 @@
 #
 import aiohttp_apispec  # type: ignore[import-untyped]
 
-from aiohttp.web import HTTPFound, HTTPMethodNotAllowed, HTTPUnauthorized
+from aiohttp.web import HTTPBadRequest, HTTPFound, HTTPMethodNotAllowed, HTTPUnauthorized
 
 from ahriman.core.auth.helpers import remember
 from ahriman.models.user_access import UserAccess
@@ -93,6 +93,7 @@ class LoginView(BaseView):
         description="Login by using username and password",
         responses={
             302: {"description": "Success response"},
+            400: {"description": "Bad data is supplied", "schema": ErrorSchema},
             401: {"description": "Authorization required", "schema": ErrorSchema},
             500: {"description": "Internal server error", "schema": ErrorSchema},
         },
@@ -107,11 +108,15 @@ class LoginView(BaseView):
             HTTPFound: on success response
             HTTPUnauthorized: if case of authorization error
         """
-        data = await self.extract_data()
-        identity = data.get("username")
+        try:
+            data = await self.request.json()
+            identity = data["username"]
+            password = data["password"]
+        except Exception as ex:
+            raise HTTPBadRequest(reason=str(ex))
 
         response = HTTPFound("/")
-        if identity is not None and await self.validator.check_credentials(identity, data.get("password")):
+        if await self.validator.check_credentials(identity, password):
             await remember(self.request, response, identity)
             raise response
 

src/ahriman/web/views/v2/status/logs.py

@@ -24,9 +24,10 @@ from aiohttp.web import Response, json_response
 from ahriman.models.user_access import UserAccess
 from ahriman.web.schemas import AuthSchema, ErrorSchema, LogSchema, PackageNameSchema, PaginationSchema
 from ahriman.web.views.base import BaseView
+from ahriman.web.views.status_view_guard import StatusViewGuard
 
 
-class LogsView(BaseView):
+class LogsView(StatusViewGuard, BaseView):
     """
     package logs web view
 

src/ahriman/web/web.py

@@ -146,7 +146,7 @@ def setup_server(configuration: Configuration, spawner: Spawn, repositories: lis
     application.middlewares.append(exception_handler(application.logger))
 
     application.logger.info("setup routes")
-    setup_routes(application, configuration.getpath("web", "static_path"))
+    setup_routes(application, configuration)
 
     application.logger.info("setup CORS")
     setup_cors(application)