installer: use locked version of vcs dependency with extras instead of latest (#6185)

src/poetry/mixology/version_solver.py

@@ -418,11 +418,6 @@ class VersionSolver:
                 return complete_name
 
             package = None
-            if dependency.name not in self._use_latest:
-                # prefer locked version of compatible (not exact same) dependency;
-                # required in order to not unnecessarily update dependencies with
-                # extras, e.g. "coverage" vs. "coverage[toml]"
-                locked = self._get_locked(dependency, allow_similar=True)
             if locked is not None:
                 package = next(
                     (
@@ -504,9 +499,7 @@ class VersionSolver:
                 incompatibility
             )
 
-    def _get_locked(
-        self, dependency: Dependency, *, allow_similar: bool = False
-    ) -> DependencyPackage | None:
+    def _get_locked(self, dependency: Dependency) -> DependencyPackage | None:
         if dependency.name in self._use_latest:
             return None
 
@@ -514,8 +507,13 @@ class VersionSolver:
         for dependency_package in locked:
             package = dependency_package.package
             if (
-                allow_similar or dependency.is_same_package_as(package)
-            ) and dependency.constraint.allows(package.version):
+                # Locked dependencies are always without features.
+                # Thus, we can't use is_same_package_as() here because it compares
+                # the complete_name (including features).
+                dependency.name == package.name
+                and dependency.is_same_source_as(package)
+                and dependency.constraint.allows(package.version)
+            ):
                 return DependencyPackage(dependency, package)
         return None
 

tests/installation/fixtures/with-vcs-dependency-with-extras.test

+[[package]]
+name = "demo"
+version = "0.1.2"
+description = ""
+category = "main"
+optional = false
+python-versions = "*"
+develop = false
+
+[package.dependencies]
+cleo = {version = "*", optional = true, markers = "extra == \"foo\""}
+pendulum = ">=1.4.4"
+
+[package.extras]
+foo = ["cleo"]
+
+[package.source]
+type = "git"
+url = "https://github.com/demo/demo.git"
+reference = "master"
+resolved_reference = "123456"
+
+[[package]]
+name = "pendulum"
+version = "1.4.4"
+description = ""
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "cleo"
+version = "1.0.0"
+description = ""
+category = "main"
+optional = false
+python-versions = "*"
+
+[metadata]
+python-versions = "*"
+lock-version = "1.1"
+content-hash = "123456789"
+
+[metadata.files]
+demo = []
+pendulum = []
+cleo = []

tests/installation/test_installer.py

@@ -2473,3 +2473,45 @@ def test_installer_should_use_the_locked_version_of_git_dependencies(
         source_reference="master",
         source_resolved_reference="123456",
     )
+
+
+@pytest.mark.parametrize("is_locked", [False, True])
+def test_installer_should_use_the_locked_version_of_git_dependencies_with_extras(
+    installer: Installer,
+    locker: Locker,
+    package: ProjectPackage,
+    repo: Repository,
+    is_locked: bool,
+):
+    if is_locked:
+        locker.locked(True)
+        locker.mock_lock_data(fixture("with-vcs-dependency-with-extras"))
+        expected_reference = "123456"
+    else:
+        expected_reference = "9cf87a285a2d3fbb0b9fa621997b3acc3631ed24"
+
+    package.add_dependency(
+        Factory.create_dependency(
+            "demo",
+            {
+                "git": "https://github.com/demo/demo.git",
+                "branch": "master",
+                "extras": ["foo"],
+            },
+        )
+    )
+
+    repo.add_package(get_package("pendulum", "1.4.4"))
+    repo.add_package(get_package("cleo", "1.0.0"))
+
+    installer.run()
+
+    assert len(installer.executor.installations) == 3
+    assert installer.executor.installations[-1] == Package(
+        "demo",
+        "0.1.2",
+        source_type="git",
+        source_url="https://github.com/demo/demo.git",
+        source_reference="master",
+        source_resolved_reference=expected_reference,
+    )