bug: always keep existing package version in archive

ahriman-core/src/ahriman/core/housekeeping/archive_rotation_trigger.py

@@ -87,7 +87,12 @@ class ArchiveRotationTrigger(Trigger):
         if self.keep_built_packages == 0:
             return
 
-        to_remove = repository.package_archives(package.base)
+        current = next(iter(repository.packages([package.base])), None)
+        to_remove = [
+            single
+            for single in repository.package_archives(package.base)
+            if current is None or single.version != current.version
+        ]
 
         for single in to_remove[:-self.keep_built_packages]:
             self.logger.info("removing version %s of package %s", single.version, single.base)

ahriman-core/tests/ahriman/core/housekeeping/test_archive_rotation_trigger.py

@@ -22,10 +22,10 @@ def test_configuration_sections(configuration: Configuration) -> None:
 def test_archives_remove(archive_rotation_trigger: ArchiveRotationTrigger, package_ahriman: Package,
                          repository: Repository, mocker: MockerFixture) -> None:
     """
-    must remove older packages
+    must keep the current package and the configured amount of additional packages
     """
     packages = []
-    for i in range(5):
+    for i in range(1, 7):
         generated = replace(package_ahriman, version=str(i))
         generated.packages = {
             key: replace(value, filename=str(i))
@@ -33,14 +33,17 @@ def test_archives_remove(archive_rotation_trigger: ArchiveRotationTrigger, packa
         }
         packages.append(generated)
 
+    archive_rotation_trigger.keep_built_packages = 2
+    mocker.patch.object(repository, "packages", return_value=[replace(package_ahriman, version="3")])
     mocker.patch("ahriman.core.repository.package_info.PackageInfo.package_archives", return_value=packages)
-    mocker.patch("pathlib.Path.glob", return_value=[Path(str(i)) for i in range(5)])
+    mocker.patch("pathlib.Path.glob", side_effect=lambda pattern: [Path(pattern.removesuffix("*"))])
     unlink_mock = mocker.patch("pathlib.Path.unlink", autospec=True)
 
     archive_rotation_trigger.archives_remove(package_ahriman, repository)
     unlink_mock.assert_has_calls([
-        MockCall(Path("0")),
         MockCall(Path("1")),
+        MockCall(Path("2")),
+        MockCall(Path("4")),
     ])
 
 

docs/configuration.rst

@@ -207,7 +207,7 @@ Web server settings. This feature requires ``aiohttp`` libraries to be installed
 
 Describes settings for packages archives management extensions.
 
-* ``keep_built_packages`` - keep this amount of built packages with different versions, integer, required. ``0`` will effectively disable archives removal.
+* ``keep_built_packages`` - keep this amount of additional built package versions alongside the version currently published in the repository, integer, required. ``0`` will effectively disable archives removal.
 
 ``keyring`` group
 -----------------

docs/triggers.rst

@@ -44,7 +44,7 @@ This trigger will be called right after build process (``on_result``). It will p
 ``ahriman.core.housekeeping.ArchiveRotationTrigger``
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-This trigger removes old package versions from the archive directory. It implements ``on_result`` and, after each build, compares available versions for updated packages and removes the older ones, keeping only the last N versions as configured by ``keep_built_packages`` option.
+This trigger removes old package versions from the archive directory. It implements ``on_result`` and, after each build, compares available versions for updated packages and removes older ones, keeping the version currently published in the repository plus the last N other versions as configured by ``keep_built_packages`` option.
 
 ``ahriman.core.housekeeping.LogsRotationTrigger``
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^