Add download_info to InstallRequirement

src/pip/_internal/operations/prepare.py

@@ -25,6 +25,7 @@ from pip._internal.exceptions import (
 )
 from pip._internal.index.package_finder import PackageFinder
 from pip._internal.metadata import BaseDistribution
+from pip._internal.models.direct_url import ArchiveInfo
 from pip._internal.models.link import Link
 from pip._internal.models.wheel import Wheel
 from pip._internal.network.download import BatchDownloader, Downloader
@@ -35,9 +36,18 @@ from pip._internal.network.lazy_wheel import (
 from pip._internal.network.session import PipSession
 from pip._internal.operations.build.build_tracker import BuildTracker
 from pip._internal.req.req_install import InstallRequirement
+from pip._internal.utils.direct_url_helpers import (
+    direct_url_for_editable,
+    direct_url_from_link,
+)
 from pip._internal.utils.hashes import Hashes, MissingHashes
 from pip._internal.utils.logging import indent_log
-from pip._internal.utils.misc import display_path, hide_url, is_installable_dir
+from pip._internal.utils.misc import (
+    display_path,
+    hash_file,
+    hide_url,
+    is_installable_dir,
+)
 from pip._internal.utils.temp_dir import TempDirectory
 from pip._internal.utils.unpacking import unpack_file
 from pip._internal.vcs import vcs
@@ -489,10 +499,26 @@ class RequirementPreparer:
                 hashes.check_against_path(file_path)
             local_file = File(file_path, content_type=None)
 
+        # If download_info is set, we got it from the wheel cache.
+        if req.download_info is None:
+            # Editables don't go through this function (see
+            # prepare_editable_requirement).
+            assert not req.editable
+            req.download_info = direct_url_from_link(link, req.source_dir)
+
         # For use in later processing,
         # preserve the file path on the requirement.
         if local_file:
             req.local_file_path = local_file.path
+            # Make sure we have a hash in download_info. If we got it as part of the
+            # URL, it will have been verified and we can rely on it. Otherwise we
+            # compute it from the downloaded file.
+            if (
+                isinstance(req.download_info.info, ArchiveInfo)
+                and not req.download_info.info.hash
+            ):
+                hash = hash_file(local_file.path)[0].hexdigest()
+                req.download_info.info.hash = f"sha256={hash}"
 
         dist = _get_prepared_distribution(
             req,
@@ -547,6 +573,8 @@ class RequirementPreparer:
                 )
             req.ensure_has_source_dir(self.src_dir)
             req.update_editable()
+            assert req.source_dir
+            req.download_info = direct_url_for_editable(req.unpacked_source_directory)
 
             dist = _get_prepared_distribution(
                 req,

src/pip/_internal/req/req_install.py

@@ -26,6 +26,7 @@ from pip._internal.metadata import (
     get_default_environment,
     get_directory_distribution,
 )
+from pip._internal.models.direct_url import DirectUrl
 from pip._internal.models.link import Link
 from pip._internal.operations.build.metadata import generate_metadata
 from pip._internal.operations.build.metadata_editable import generate_editable_metadata
@@ -112,6 +113,10 @@ class InstallRequirement:
         self.link = self.original_link = link
         self.original_link_is_in_wheel_cache = False
 
+        # Information about the location of the artifact that was downloaded . This
+        # property is guaranteed to be set in resolver results.
+        self.download_info: Optional[DirectUrl] = None
+
         # Path to any downloaded or already-existing package.
         self.local_file_path: Optional[str] = None
         if self.link and self.link.is_file:
@@ -762,6 +767,7 @@ class InstallRequirement:
         if self.is_wheel:
             assert self.local_file_path
             direct_url = None
+            # TODO this can be refactored to direct_url = self.download_info
             if self.editable:
                 direct_url = direct_url_for_editable(self.unpacked_source_directory)
             elif self.original_link:

tests/unit/test_req.py

@@ -22,6 +22,7 @@ from pip._internal.exceptions import (
 )
 from pip._internal.index.package_finder import PackageFinder
 from pip._internal.metadata import select_backend
+from pip._internal.models.direct_url import ArchiveInfo, DirInfo, VcsInfo
 from pip._internal.network.session import PipSession
 from pip._internal.operations.build.build_tracker import get_build_tracker
 from pip._internal.operations.prepare import RequirementPreparer
@@ -342,6 +343,115 @@ class TestRequirementSet:
             )
         )
 
+    def test_download_info_find_links(self, data: TestData) -> None:
+        """Test that download_info is set for requirements via find_links."""
+        finder = make_test_finder(find_links=[data.find_links])
+        with self._basic_resolver(finder) as resolver:
+            ireq = get_processed_req_from_line("simple")
+            reqset = resolver.resolve([ireq], True)
+            assert len(reqset.all_requirements) == 1
+            req = reqset.all_requirements[0]
+            assert req.download_info
+            assert isinstance(req.download_info.info, ArchiveInfo)
+            assert req.download_info.info.hash
+
+    @pytest.mark.network
+    def test_download_info_index_url(self) -> None:
+        """Test that download_info is set for requirements via index."""
+        finder = make_test_finder(index_urls=["https://pypi.org/simple"])
+        with self._basic_resolver(finder) as resolver:
+            ireq = get_processed_req_from_line("initools")
+            reqset = resolver.resolve([ireq], True)
+            assert len(reqset.all_requirements) == 1
+            req = reqset.all_requirements[0]
+            assert req.download_info
+            assert isinstance(req.download_info.info, ArchiveInfo)
+            assert req.download_info.info.hash
+
+    @pytest.mark.network
+    def test_download_info_web_archive(self) -> None:
+        """Test that download_info is set for requirements from a web archive."""
+        finder = make_test_finder()
+        with self._basic_resolver(finder) as resolver:
+            ireq = get_processed_req_from_line(
+                "pip-test-package @ "
+                "https://github.com/pypa/pip-test-package/tarball/0.1.1"
+            )
+            reqset = resolver.resolve([ireq], True)
+            assert len(reqset.all_requirements) == 1
+            req = reqset.all_requirements[0]
+            assert req.download_info
+            assert (
+                req.download_info.url
+                == "https://github.com/pypa/pip-test-package/tarball/0.1.1"
+            )
+            assert isinstance(req.download_info.info, ArchiveInfo)
+            assert (
+                req.download_info.info.hash == "sha256="
+                "ad977496000576e1b6c41f6449a9897087ce9da6db4f15b603fe8372af4bf3c6"
+            )
+
+    def test_download_info_local_wheel(self, data: TestData) -> None:
+        """Test that download_info is set for requirements from a local wheel."""
+        finder = make_test_finder()
+        with self._basic_resolver(finder) as resolver:
+            ireq = get_processed_req_from_line(
+                f"{data.packages}/simplewheel-1.0-py2.py3-none-any.whl"
+            )
+            reqset = resolver.resolve([ireq], True)
+            assert len(reqset.all_requirements) == 1
+            req = reqset.all_requirements[0]
+            assert req.download_info
+            assert req.download_info.url.startswith("file://")
+            assert isinstance(req.download_info.info, ArchiveInfo)
+            assert (
+                req.download_info.info.hash == "sha256="
+                "e63aa139caee941ec7f33f057a5b987708c2128238357cf905429846a2008718"
+            )
+
+    def test_download_info_local_dir(self, data: TestData) -> None:
+        """Test that download_info is set for requirements from a local dir."""
+        finder = make_test_finder()
+        with self._basic_resolver(finder) as resolver:
+            ireq_url = path_to_url(data.packages / "FSPkg")
+            ireq = get_processed_req_from_line(f"FSPkg @ {ireq_url}")
+            reqset = resolver.resolve([ireq], True)
+            assert len(reqset.all_requirements) == 1
+            req = reqset.all_requirements[0]
+            assert req.download_info
+            assert req.download_info.url.startswith("file://")
+            assert isinstance(req.download_info.info, DirInfo)
+
+    def test_download_info_local_editable_dir(self, data: TestData) -> None:
+        """Test that download_info is set for requirements from a local editable dir."""
+        finder = make_test_finder()
+        with self._basic_resolver(finder) as resolver:
+            ireq_url = path_to_url(data.packages / "FSPkg")
+            ireq = get_processed_req_from_line(f"-e {ireq_url}#egg=FSPkg")
+            reqset = resolver.resolve([ireq], True)
+            assert len(reqset.all_requirements) == 1
+            req = reqset.all_requirements[0]
+            assert req.download_info
+            assert req.download_info.url.startswith("file://")
+            assert isinstance(req.download_info.info, DirInfo)
+            assert req.download_info.info.editable
+
+    @pytest.mark.network
+    def test_download_info_vcs(self) -> None:
+        """Test that download_info is set for requirements from git."""
+        finder = make_test_finder()
+        with self._basic_resolver(finder) as resolver:
+            ireq = get_processed_req_from_line(
+                "pip-test-package @ git+https://github.com/pypa/pip-test-package"
+            )
+            reqset = resolver.resolve([ireq], True)
+            assert len(reqset.all_requirements) == 1
+            req = reqset.all_requirements[0]
+            assert req.download_info
+            assert isinstance(req.download_info.info, VcsInfo)
+            assert req.download_info.url == "https://github.com/pypa/pip-test-package"
+            assert req.download_info.info.vcs == "git"
+
 
 class TestInstallRequirement:
     def setup(self) -> None: