Add support for subdirectories in git urls

src/poetry/installation/executor.py

@@ -535,6 +535,9 @@ def _install_directory(self, operation: Install | Update) -> int:
         else:
             req = Path(package.source_url).resolve(strict=False)
 
+        if package.source_subdirectory:
+            req /= package.source_subdirectory
+
         pyproject = PyProjectTOML(os.path.join(req, "pyproject.toml"))
 
         if pyproject.is_poetry_project():
@@ -762,6 +765,8 @@ def _create_git_url_reference(self, package: Package) -> dict[str, Any]:
                 "commit_id": package.source_resolved_reference,
             },
         }
+        if package.source_subdirectory:
+            reference["subdirectory"] = package.source_subdirectory
 
         return reference
 

tests/fixtures/git/github.com/demo/subdirectories/one-copy/pyproject.toml

@@ -7,3 +7,7 @@ license = "MIT"
 
 [tool.poetry.dependencies]
 python = "^3.7"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"

tests/fixtures/git/github.com/demo/subdirectories/one/pyproject.toml

@@ -7,3 +7,7 @@ license = "MIT"
 
 [tool.poetry.dependencies]
 python = "^3.7"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"

tests/fixtures/git/github.com/demo/subdirectories/two/pyproject.toml

@@ -7,3 +7,7 @@ license = "MIT"
 
 [tool.poetry.dependencies]
 python = "~2.7 || ^3.4"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"

tests/installation/test_executor.py

@@ -553,6 +553,40 @@ def test_executor_should_write_pep610_url_references_for_git(
     )
 
 
+def test_executor_should_write_pep610_url_references_for_git_with_subdirectories(
+    tmp_venv: VirtualEnv,
+    pool: Pool,
+    config: Config,
+    io: BufferedIO,
+    mock_file_downloads: None,
+):
+    package = Package(
+        "two",
+        "2.0.0",
+        source_type="git",
+        source_reference="master",
+        source_resolved_reference="123456",
+        source_url="https://github.com/demo/subdirectories.git",
+        source_subdirectory="two",
+    )
+
+    executor = Executor(tmp_venv, pool, config, io)
+    executor.execute([Install(package)])
+    verify_installed_distribution(
+        tmp_venv,
+        package,
+        {
+            "vcs_info": {
+                "vcs": "git",
+                "requested_revision": "master",
+                "commit_id": "123456",
+            },
+            "url": package.source_url,
+            "subdirectory": package.source_subdirectory,
+        },
+    )
+
+
 def test_executor_should_use_cached_link_and_hash(
     tmp_venv: VirtualEnv,
     pool: Pool,