# This is a combination of 23 commits.

parent af71f3c
author Damian <[email protected]> 1633755088 -0400
committer Damian <[email protected]> 1633755088 -0400

parent 02b4f86
author Damian <[email protected]> 1633754869 -0400
committer Damian <[email protected]> 1633754928 -0400

parent 02b4f86
author Damian <[email protected]> 1633754869 -0400
committer Damian <[email protected]> 1633754892 -0400

Return a better error message if a `file:` URL is not found (#10263)

Co-authored-by: Tzu-ping Chung <[email protected]>
Co-authored-by: Pradyun Gedam <[email protected]>

Prefer failure causes when backtracking

This fix is in the wrong PR confusing matters

Change name to backtrack_causes
Create is_backtrack_cause function

Fix newlines

Typo Fix in Comment

Fix lint errors

Add News Item

Newline

Better news.

Fix known depths

Fix known depths

Fix known depths

This fix is in the wrong PR confusing matters

Change name to backtrack_causes
Create is_backtrack_cause function

Fix newlines

Typo Fix in Comment

Fix lint errors

# This is the commit message #22:

Better news.

# This is the commit message #23:

Update news/10479.feature.rst

Co-authored-by: Pradyun Gedam <[email protected]>

Author: notatallshaw

news/10479.feature.rst

@@ -1 +1 @@
-New resolver: When backtracking prefer the dependencies which caused the most recent backtracking. In some cases this will significantly reduce the amount of backtracking required.
+When backtracking during dependency resolution, prefer the dependencies which are involved in the most recent conflict. This can significantly reduce the amount of backtracking required.

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

@@ -205,8 +205,7 @@ def get_dependencies(self, candidate: Candidate) -> Sequence[Requirement]:
 
     @staticmethod
     def is_backtrack_cause(
-        identifier: str,
-        backtrack_causes: Sequence["RequirementInformation"]
+        identifier: str, backtrack_causes: Sequence["RequirementInformation"]
     ) -> bool:
         for backtrack_cause in backtrack_causes:
             if identifier == backtrack_cause.requirement.name: