Add download_info: DirectUrl to InstallRequirement

news/11137.feature.rst

@@ -0,0 +1,3 @@
+Record in wheel cache entries the URL of the original artifiact that was downloaded
+to build the cached wheels. The record is named ``origin.json`` and uses the PEP 610
+Direct URL format.

src/pip/_internal/cache.py

@@ -5,12 +5,14 @@
 import json
 import logging
 import os
+from pathlib import Path
 from typing import Any, Dict, List, Optional, Set
 
 from pip._vendor.packaging.tags import Tag, interpreter_name, interpreter_version
 from pip._vendor.packaging.utils import canonicalize_name
 
 from pip._internal.exceptions import InvalidWheelFilename
+from pip._internal.models.direct_url import DirectUrl
 from pip._internal.models.format_control import FormatControl
 from pip._internal.models.link import Link
 from pip._internal.models.wheel import Wheel
@@ -19,6 +21,8 @@
 
 logger = logging.getLogger(__name__)
 
+ORIGIN_JSON_NAME = "origin.json"
+
 
 def _hash_dict(d: Dict[str, str]) -> str:
     """Return a stable sha224 of a dictionary."""
@@ -204,6 +208,10 @@ def __init__(
     ):
         self.link = link
         self.persistent = persistent
+        self.origin: Optional[DirectUrl] = None
+        origin_direct_url_path = Path(self.link.file_path).parent / ORIGIN_JSON_NAME
+        if origin_direct_url_path.exists():
+            self.origin = DirectUrl.from_json(origin_direct_url_path.read_text())
 
 
 class WheelCache(Cache):
@@ -262,3 +270,20 @@ def get_cache_entry(
             return CacheEntry(retval, persistent=False)
 
         return None
+
+    @staticmethod
+    def record_download_origin(cache_dir: str, download_info: DirectUrl) -> None:
+        origin_path = Path(cache_dir) / ORIGIN_JSON_NAME
+        if origin_path.is_file():
+            origin = DirectUrl.from_json(origin_path.read_text())
+            # TODO: use DirectUrl.equivalent when https://github.com/pypa/pip/pull/10564
+            # is merged.
+            if origin.url != download_info.url:
+                logger.warning(
+                    "Origin URL %s in cache entry %s does not match download URL %s. "
+                    "This is likely a pip bug or a cache corruption issue.",
+                    origin.url,
+                    cache_dir,
+                    download_info.url,
+                )
+        origin_path.write_text(download_info.to_json())

src/pip/_internal/operations/prepare.py

@@ -25,6 +25,7 @@
 )
 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.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
@@ -489,6 +499,23 @@ def _prepare_linked_requirement(
                 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)
+            # 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
+                and local_file
+            ):
+                hash = hash_file(local_file.path)[0].hexdigest()
+                req.download_info.info.hash = f"sha256={hash}"
+
         # For use in later processing,
         # preserve the file path on the requirement.
         if local_file:
@@ -547,6 +574,8 @@ def prepare_editable_requirement(
                 )
             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 @@
     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 @@ def __init__(
         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 @@ def install(
         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:

src/pip/_internal/resolution/legacy/resolver.py

@@ -45,6 +45,7 @@
 from pip._internal.resolution.base import BaseResolver, InstallRequirementProvider
 from pip._internal.utils import compatibility_tags
 from pip._internal.utils.compatibility_tags import get_supported
+from pip._internal.utils.direct_url_helpers import direct_url_from_link
 from pip._internal.utils.logging import indent_log
 from pip._internal.utils.misc import normalize_version_info
 from pip._internal.utils.packaging import check_requires_python
@@ -431,6 +432,14 @@ def _populate_link(self, req: InstallRequirement) -> None:
             logger.debug("Using cached wheel link: %s", cache_entry.link)
             if req.link is req.original_link and cache_entry.persistent:
                 req.original_link_is_in_wheel_cache = True
+            if cache_entry.origin is not None:
+                req.download_info = cache_entry.origin
+            else:
+                # Legacy cache entry that does not have origin.json.
+                # download_info may miss the archive_info.hash field.
+                req.download_info = direct_url_from_link(
+                    req.link, link_is_in_wheel_cache=cache_entry.persistent
+                )
             req.link = cache_entry.link
 
     def _get_dist_for(self, req: InstallRequirement) -> BaseDistribution:

src/pip/_internal/resolution/resolvelib/candidates.py

@@ -18,6 +18,7 @@
     install_req_from_line,
 )
 from pip._internal.req.req_install import InstallRequirement
+from pip._internal.utils.direct_url_helpers import direct_url_from_link
 from pip._internal.utils.misc import normalize_version_info
 
 from .base import Candidate, CandidateVersion, Requirement, format_name
@@ -281,12 +282,17 @@ def __init__(
                     version, wheel_version, name
                 )
 
-        if (
-            cache_entry is not None
-            and cache_entry.persistent
-            and template.link is template.original_link
-        ):
-            ireq.original_link_is_in_wheel_cache = True
+        if cache_entry is not None:
+            if cache_entry.persistent and template.link is template.original_link:
+                ireq.original_link_is_in_wheel_cache = True
+            if cache_entry.origin is not None:
+                ireq.download_info = cache_entry.origin
+            else:
+                # Legacy cache entry that does not have origin.json.
+                # download_info may miss the archive_info.hash field.
+                ireq.download_info = direct_url_from_link(
+                    source_link, link_is_in_wheel_cache=cache_entry.persistent
+                )
 
         super().__init__(
             link=link,

src/pip/_internal/wheel_builder.py

@@ -354,6 +354,12 @@ def build(
                 req.editable and req.permit_editable_wheels,
             )
             if wheel_file:
+                # Record the download origin in the cache
+                if req.download_info is not None:
+                    # download_info is guaranteed to be set because when we build an
+                    # InstallRequirement it has been through the preparer before, but
+                    # let's be cautious.
+                    wheel_cache.record_download_origin(cache_dir, req.download_info)
                 # Update the link for this.
                 req.link = Link(path_to_url(wheel_file))
                 req.local_file_path = req.link.file_path

tests/functional/test_install.py

@@ -1550,9 +1550,9 @@ def test_install_builds_wheels(script: PipTestEnvironment, data: TestData) -> No
     )
     # Must have installed it all
     assert expected in str(res), str(res)
-    wheels = []
+    wheels: List[str] = []
     for _, _, files in os.walk(wheels_cache):
-        wheels.extend(files)
+        wheels.extend(f for f in files if f.endswith(".whl"))
     # and built wheels for upper and wheelbroken
     assert "Building wheel for upper" in str(res), str(res)
     assert "Building wheel for wheelb" in str(res), str(res)