fix: trim provides/depends versions and lookup provides through pkgname

(#150)

Current implementation did it in wrong way. First of all, there was a
lookup through pkgbase instead of pkgname, which lead to errors, because
aur api doesn't allow to search by pkgbase (as well as provides is
basically pkgname instead)

It also was found that dependencies resolution lookup has been performed
by using raw packages array, which can include versions, descriptions
etc

tests/ahriman/core/alpm/test_pacman.py

@@ -289,3 +289,4 @@ def test_package_provided_by(pacman: Pacman) -> None:
     must search through the provides lists
     """
     assert list(pacman.provided_by("sh"))
+    assert list(pacman.provided_by("libacl.so"))  # case with exact version

tests/ahriman/models/test_aur_package.py

@@ -2,7 +2,7 @@ import datetime
 import json
 import pyalpm  # typing: ignore
 
-from dataclasses import asdict, fields
+from dataclasses import asdict, fields, replace
 from pathlib import Path
 from pytest_mock import MockerFixture
 from typing import Any
@@ -38,6 +38,25 @@ def _get_official_data(resource_path_root: Path) -> dict[str, Any]:
     return json.loads(response)["results"][0]
 
 
+def test_post_init(aur_package_ahriman: AURPackage) -> None:
+    """
+    must trim versions and descriptions from packages list
+    """
+    package = replace(
+        aur_package_ahriman,
+        depends=["a=1"],
+        make_depends=["b>=3"],
+        opt_depends=["c: a description"],
+        check_depends=["d=4"],
+        provides=["e=5"],
+    )
+    assert package.depends == ["a"]
+    assert package.make_depends == ["b"]
+    assert package.opt_depends == ["c"]
+    assert package.check_depends == ["d"]
+    assert package.provides == ["e"]
+
+
 def test_from_json(aur_package_ahriman: AURPackage, resource_path_root: Path) -> None:
     """
     must load package from json

tests/ahriman/models/test_package_description.py

@@ -6,10 +6,15 @@ from ahriman.models.package_description import PackageDescription
 
 def test_post_init() -> None:
     """
-    must trim versions and descriptions from dependencies list
+    must trim versions and descriptions from packages list
     """
-    assert PackageDescription(depends=["a=1"], make_depends=["b>=3"], opt_depends=["c: a description"]) == \
-        PackageDescription(depends=["a"], make_depends=["b"], opt_depends=["c"])
+    assert PackageDescription(
+        depends=["a=1"],
+        make_depends=["b>=3"],
+        opt_depends=["c: a description"],
+        check_depends=["d=4"],
+        provides=["e=5"]
+    ) == PackageDescription(depends=["a"], make_depends=["b"], opt_depends=["c"], check_depends=["d"], provides=["e"])
 
 
 def test_filepath(package_description_ahriman: PackageDescription) -> None: