pylock: read index field

Author: sbidoul

src/pip/_internal/models/pylock.py

@@ -353,7 +353,7 @@ class Package:
     vcs: Optional[PackageVcs]
     directory: Optional[PackageDirectory]
     archive: Optional[PackageArchive]
-    # (not supported) index: Optional[str]
+    index: Optional[str]
     sdist: Optional[PackageSdist]
     wheels: Optional[List[PackageWheel]]
     attestation_identities: Optional[List[Dict[str, Any]]]
@@ -385,6 +385,7 @@ def from_dict(cls, d: Dict[str, Any]) -> "Self":
             vcs=_get_object(d, PackageVcs, "vcs"),
             directory=_get_object(d, PackageDirectory, "directory"),
             archive=_get_object(d, PackageArchive, "archive"),
+            index=_get(d, str, "index"),
             sdist=_get_object(d, PackageSdist, "sdist"),
             wheels=_get_list_of_objects(d, PackageWheel, "wheels"),
             attestation_identities=_get_list(d, dict, "attestation-identities"),

src/pip/_internal/utils/pylock.py

@@ -107,6 +107,7 @@ def _pylock_package_from_install_requirement(
         vcs=package_vcs,
         directory=package_directory,
         archive=package_archive,
+        index=None,  # not supported
         sdist=package_sdist,
         wheels=package_wheels,
         attestation_identities=None,  # not supported

tests/unit/test_utils_pylock.py

@@ -6,9 +6,11 @@
 from pip._internal.utils.compat import tomllib
 from pip._internal.utils.pylock import pylock_to_toml
 
-# This is the PEP 751 example, with a minor modification to the 'environments'
-# field to use double quotes instead of single quotes, since that is what
-# 'packaging' does when serializing markers.
+# This is the PEP 751 example, with the following differences:
+# - a minor modification to the 'environments' field to use double quotes
+#   instead of single quotes, since that is what 'packaging' does when
+#   serializing markers;
+# - added an index field, which was not demonstrated in the PEP 751 example.
 
 PEP751_EXAMPLE = dedent(
     """\
@@ -37,6 +39,7 @@
     dependencies = [
         {name = 'attrs'},
     ]
+    index = 'https://pypi.org/simple'
     wheels = [
     {name = 'cattrs-24.1.2-py3-none-any.whl', upload-time = 2024-09-22T14:58:34.812643+00:00, url = 'https://files.pythonhosted.org/packages/c8/d5/867e75361fc45f6de75fe277dd085627a9db5ebb511a87f27dc1396b5351/cattrs-24.1.2-py3-none-any.whl', size = 66446, hashes = {sha256 = '67c7495b760168d931a10233f979b28dc04daf853b30752246f4f8471c6d68d0'}},
     ]