Read PEP-610-compliant files when loading installed packages

poetry/repositories/installed_repository.py

 import itertools
+import json
 
 from pathlib import Path
+from typing import TYPE_CHECKING
 from typing import Set
+from typing import Tuple
 from typing import Union
 
 from poetry.core.packages.package import Package
+from poetry.core.packages.utils.utils import url_to_path
+from poetry.core.utils.helpers import canonicalize_name
 from poetry.core.utils.helpers import module_name
 from poetry.utils._compat import metadata
 from poetry.utils.env import Env
@@ -14,6 +19,9 @@ from .repository import Repository
 
 _VENDORS = Path(__file__).parent.parent.joinpath("_vendor")
 
+if TYPE_CHECKING:
+    from importlib.metadata import Distribution
+
 
 try:
     FileNotFoundError
@@ -68,21 +76,14 @@ class InstalledRepository(Repository):
         return paths
 
     @classmethod
-    def set_package_vcs_properties_from_path(cls, src: Path, package: Package) -> None:
+    def get_package_vcs_properties_from_path(cls, src: Path) -> Tuple[str, str, str]:
         from poetry.core.vcs.git import Git
 
         git = Git()
         revision = git.rev_parse("HEAD", src).strip()
         url = git.remote_url(src)
 
-        package._source_type = "git"
-        package._source_url = url
-        package._source_reference = revision
-
-    @classmethod
-    def set_package_vcs_properties(cls, package: Package, env: Env) -> None:
-        src = env.path / "src" / package.name
-        cls.set_package_vcs_properties_from_path(src, package)
+        return "git", url, revision
 
     @classmethod
     def is_vcs_package(cls, package: Union[Path, Package], env: Env) -> bool:
@@ -100,6 +101,125 @@ class InstalledRepository(Repository):
             return True
 
     @classmethod
+    def create_package_from_distribution(
+        cls, distribution: "Distribution", env: "Env"
+    ) -> Package:
+        # We first check for a direct_url.json file to determine
+        # the type of package.
+        path = Path(str(distribution._path))
+
+        if (
+            path.name.endswith(".dist-info")
+            and path.joinpath("direct_url.json").exists()
+        ):
+            return cls.create_package_from_pep610(distribution)
+
+        is_standard_package = env.is_path_relative_to_lib(path)
+
+        source_type = None
+        source_url = None
+        source_reference = None
+        source_resolved_reference = None
+        if is_standard_package:
+            if path.name.endswith(".dist-info"):
+                paths = cls.get_package_paths(
+                    env=env, name=distribution.metadata["name"]
+                )
+                if paths:
+                    is_editable_package = False
+                    for src in paths:
+                        if cls.is_vcs_package(src, env):
+                            (
+                                source_type,
+                                source_url,
+                                source_reference,
+                            ) = cls.get_package_vcs_properties_from_path(src)
+                            break
+
+                        if not (
+                            is_editable_package or env.is_path_relative_to_lib(src)
+                        ):
+                            is_editable_package = True
+                    else:
+                        # TODO: handle multiple source directories?
+                        if is_editable_package:
+                            source_type = "directory"
+                            source_url = paths.pop().as_posix()
+        else:
+            if cls.is_vcs_package(path, env):
+                (
+                    source_type,
+                    source_url,
+                    source_reference,
+                ) = cls.get_package_vcs_properties_from_path(
+                    env.path / "src" / canonicalize_name(distribution.metadata["name"])
+                )
+            else:
+                # If not, it's a path dependency
+                source_type = "directory"
+                source_url = str(path.parent)
+
+        package = Package(
+            distribution.metadata["name"],
+            distribution.metadata["version"],
+            source_type=source_type,
+            source_url=source_url,
+            source_reference=source_reference,
+            source_resolved_reference=source_resolved_reference,
+        )
+        package.description = distribution.metadata.get("summary", "")
+
+        return package
+
+    @classmethod
+    def create_package_from_pep610(cls, distribution: "Distribution") -> Package:
+        path = Path(str(distribution._path))
+        source_type = None
+        source_url = None
+        source_reference = None
+        source_resolved_reference = None
+        develop = False
+
+        url_reference = json.loads(
+            path.joinpath("direct_url.json").read_text(encoding="utf-8")
+        )
+        if "archive_info" in url_reference:
+            # File or URL distribution
+            if url_reference["url"].startswith("file:"):
+                # File distribution
+                source_type = "file"
+                source_url = url_to_path(url_reference["url"]).as_posix()
+            else:
+                # URL distribution
+                source_type = "url"
+                source_url = url_reference["url"]
+        elif "dir_info" in url_reference:
+            # Directory distribution
+            source_type = "directory"
+            source_url = url_to_path(url_reference["url"]).as_posix()
+            develop = url_reference["dir_info"].get("editable", False)
+        elif "vcs_info" in url_reference:
+            # VCS distribution
+            source_type = url_reference["vcs_info"]["vcs"]
+            source_url = url_reference["url"]
+            source_reference = url_reference["vcs_info"]["requested_revision"]
+            source_resolved_reference = url_reference["vcs_info"]["commit_id"]
+
+        package = Package(
+            distribution.metadata["name"],
+            distribution.metadata["version"],
+            source_type=source_type,
+            source_url=source_url,
+            source_reference=source_reference,
+            source_resolved_reference=source_resolved_reference,
+            develop=develop,
+        )
+
+        package.description = distribution.metadata.get("summary", "")
+
+        return package
+
+    @classmethod
     def load(cls, env: Env, with_dependencies: bool = False) -> "InstalledRepository":
         """
         Load installed packages.
@@ -114,20 +234,13 @@ class InstalledRepository(Repository):
                 metadata.distributions(path=[entry]),
                 key=lambda d: str(d._path),
             ):
-                name = distribution.metadata["name"]
-                path = Path(str(distribution._path))
-                version = distribution.metadata["version"]
-                package = Package(name, version, version)
-                package.description = distribution.metadata.get("summary", "")
-
-                if with_dependencies:
-                    for require in distribution.metadata.get_all("requires-dist", []):
-                        dep = Dependency.create_from_pep_508(require)
-                        package.add_dependency(dep)
+                name = canonicalize_name(distribution.metadata["name"])
 
-                if package.name in seen:
+                if name in seen:
                     continue
 
+                path = Path(str(distribution._path))
+
                 try:
                     path.relative_to(_VENDORS)
                 except ValueError:
@@ -135,39 +248,14 @@ class InstalledRepository(Repository):
                 else:
                     continue
 
-                seen.add(package.name)
-
-                repo.add_package(package)
-
-                is_standard_package = env.is_path_relative_to_lib(path)
-
-                if is_standard_package:
-                    if path.name.endswith(".dist-info"):
-                        paths = cls.get_package_paths(env=env, name=package.pretty_name)
-                        if paths:
-                            is_editable_package = False
-                            for src in paths:
-                                if cls.is_vcs_package(src, env):
-                                    cls.set_package_vcs_properties(package, env)
-                                    break
+                package = cls.create_package_from_distribution(distribution, env)
 
-                                if not (
-                                    is_editable_package
-                                    or env.is_path_relative_to_lib(src)
-                                ):
-                                    is_editable_package = True
-                            else:
-                                # TODO: handle multiple source directories?
-                                if is_editable_package:
-                                    package._source_type = "directory"
-                                    package._source_url = paths.pop().as_posix()
-                    continue
+                if with_dependencies:
+                    for require in distribution.metadata.get_all("requires-dist", []):
+                        dep = Dependency.create_from_pep_508(require)
+                        package.add_dependency(dep)
 
-                if cls.is_vcs_package(path, env):
-                    cls.set_package_vcs_properties(package, env)
-                else:
-                    # If not, it's a path dependency
-                    package._source_type = "directory"
-                    package._source_url = str(path.parent)
+                seen.add(package.name)
+                repo.add_package(package)
 
         return repo

tests/repositories/fixtures/installed/lib/python3.7/site-packages/directory_pep_610-1.2.3.dist-info/METADATA

+Metadata-Version: 2.1
+Name: directory-pep-610
+Version: 1.2.3
+Summary: Foo
+License: MIT
+Requires-Python: >=3.6

tests/repositories/fixtures/installed/lib/python3.7/site-packages/directory_pep_610-1.2.3.dist-info/direct_url.json

+{
+  "url": "file:///path/to/distributions/directory-pep-610",
+  "dir_info": {}
+}

tests/repositories/fixtures/installed/lib/python3.7/site-packages/editable_directory_pep_610-1.2.3.dist-info/METADATA

+Metadata-Version: 2.1
+Name: editable-directory-pep-610
+Version: 1.2.3
+Summary: Foo
+License: MIT
+Requires-Python: >=3.6

tests/repositories/fixtures/installed/lib/python3.7/site-packages/editable_directory_pep_610-1.2.3.dist-info/direct_url.json

+{
+  "url": "file:///path/to/distributions/directory-pep-610",
+  "dir_info": {
+    "editable": true
+  }
+}

tests/repositories/fixtures/installed/lib/python3.7/site-packages/file_pep_610-1.2.3.dist-info/METADATA

+Metadata-Version: 2.1
+Name: file-pep-610
+Version: 1.2.3
+Summary: Foo
+License: MIT
+Requires-Python: >=3.6

tests/repositories/fixtures/installed/lib/python3.7/site-packages/file_pep_610-1.2.3.dist-info/direct_url.json

+{
+  "url": "file:///path/to/distributions/file-pep-610-1.2.3.tar.gz",
+  "archive_info": {
+    "hash": "sha256=2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"
+  }
+}

tests/repositories/fixtures/installed/lib/python3.7/site-packages/git_pep_610-1.2.3.dist-info/METADATA

+Metadata-Version: 2.1
+Name: git-pep-610
+Version: 1.2.3
+Summary: Foo
+License: MIT
+Requires-Python: >=3.6

tests/repositories/fixtures/installed/lib/python3.7/site-packages/git_pep_610-1.2.3.dist-info/direct_url.json

+{
+  "url": "https://github.com/demo/git-pep-610.git",
+  "vcs_info": {
+    "vcs": "git",
+    "requested_revision": "my-branch",
+    "commit_id": "123456"
+  }
+}

tests/repositories/fixtures/installed/lib/python3.7/site-packages/url_pep_610-1.2.3.dist-info/METADATA

+Metadata-Version: 2.1
+Name: url-pep-610
+Version: 1.2.3
+Summary: Foo
+License: MIT
+Requires-Python: >=3.6

tests/repositories/fixtures/installed/lib/python3.7/site-packages/url_pep_610-1.2.3.dist-info/direct_url.json

+{
+  "url": "https://python-poetry.org/distributions/url-pep-610-1.2.3.tar.gz",
+  "archive_info": {}
+}

tests/repositories/test_installed_repository.py

@@ -30,6 +30,13 @@ INSTALLED_RESULTS = [
     metadata.PathDistribution(SITE_PURELIB / "editable-with-import-2.3.4.dist-info"),
     metadata.PathDistribution(SITE_PLATLIB / "lib64-2.3.4.dist-info"),
     metadata.PathDistribution(SITE_PLATLIB / "bender-2.0.5.dist-info"),
+    metadata.PathDistribution(SITE_PURELIB / "git_pep_610-1.2.3.dist-info"),
+    metadata.PathDistribution(SITE_PURELIB / "url_pep_610-1.2.3.dist-info"),
+    metadata.PathDistribution(SITE_PURELIB / "file_pep_610-1.2.3.dist-info"),
+    metadata.PathDistribution(SITE_PURELIB / "directory_pep_610-1.2.3.dist-info"),
+    metadata.PathDistribution(
+        SITE_PURELIB / "editable_directory_pep_610-1.2.3.dist-info"
+    ),
 ]
 
 
@@ -165,3 +172,60 @@ def test_load_standard_package_with_pth_file(repository):
     assert standard.version.text == "1.2.3"
     assert standard.source_type is None
     assert standard.source_url is None
+
+
+def test_load_pep_610_compliant_git_packages(repository):
+    package = get_package_from_repository("git-pep-610", repository)
+
+    assert package is not None
+    assert package.name == "git-pep-610"
+    assert package.version.text == "1.2.3"
+    assert package.source_type == "git"
+    assert package.source_url == "https://github.com/demo/git-pep-610.git"
+    assert package.source_reference == "my-branch"
+    assert package.source_resolved_reference == "123456"
+
+
+def test_load_pep_610_compliant_url_packages(repository):
+    package = get_package_from_repository("url-pep-610", repository)
+
+    assert package is not None
+    assert package.name == "url-pep-610"
+    assert package.version.text == "1.2.3"
+    assert package.source_type == "url"
+    assert (
+        package.source_url
+        == "https://python-poetry.org/distributions/url-pep-610-1.2.3.tar.gz"
+    )
+
+
+def test_load_pep_610_compliant_file_packages(repository):
+    package = get_package_from_repository("file-pep-610", repository)
+
+    assert package is not None
+    assert package.name == "file-pep-610"
+    assert package.version.text == "1.2.3"
+    assert package.source_type == "file"
+    assert package.source_url == "/path/to/distributions/file-pep-610-1.2.3.tar.gz"
+
+
+def test_load_pep_610_compliant_directory_packages(repository):
+    package = get_package_from_repository("directory-pep-610", repository)
+
+    assert package is not None
+    assert package.name == "directory-pep-610"
+    assert package.version.text == "1.2.3"
+    assert package.source_type == "directory"
+    assert package.source_url == "/path/to/distributions/directory-pep-610"
+    assert not package.develop
+
+
+def test_load_pep_610_compliant_editable_directory_packages(repository):
+    package = get_package_from_repository("editable-directory-pep-610", repository)
+
+    assert package is not None
+    assert package.name == "editable-directory-pep-610"
+    assert package.version.text == "1.2.3"
+    assert package.source_type == "directory"
+    assert package.source_url == "/path/to/distributions/directory-pep-610"
+    assert package.develop