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🟡 Changes recommended

The path-source check also matches Git sources, causing alternate-lockfile caching with Git gems to raise when expanded_original_path expands their uninitialized @original_path.

1 open issue

• Restrict alternate lockfile caching check to path sources · New

What changed in this PR

This PR fixes caching of relative path gems declared in alternate Gemfiles, while keeping gems inside the project out of the cache.

Changes:

• Resolve relative source paths from the declaring Gemfile’s directory while preserving the project cache destination.
• Skip caching path gems located inside the project.
• Add regression specs for external and internal relative path gems.

File	Description
spec/​bundler/​multilock_cache_spec.rb	Tests relative path caching with an alternate Gemfile in a subdirectory.
lib/​bundler/​multilock/​ext/​runtime.rb	Adjusts source path resolution, cache destinations, and internal path exclusions.

_{Review effort: Balanced}