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Fix __origname__ of frozen modules#6613

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youknowone merged 4 commits intoRustPython:mainfrom
youknowone:origname
Dec 31, 2025
Merged

Fix __origname__ of frozen modules#6613
youknowone merged 4 commits intoRustPython:mainfrom
youknowone:origname

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@youknowone youknowone commented Dec 31, 2025 •
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close #6523
fix #4565

Summary by CodeRabbit

  • Bug Fixes
    • Fixed module origin name resolution for frozen module imports to correctly map internal module aliases to their canonical names.

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coderabbitai bot commented Dec 31, 2025 •
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Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

This pull request implements proper __origname__ metadata for frozen modules. A new public function resolve_frozen_alias maps internal frozen module alias names to their original counterparts, which is then used to correctly populate the __origname__ attribute during module initialization across the import and module systems.

Changes

Cohort / File(s) Summary
Alias Resolution Function
crates/vm/src/vm/mod.rs		 Adds public resolve_frozen_alias(name: &str) -> &str function that maps internal frozen module aliases ("_frozen_importlib" → "importlib._bootstrap", "_frozen_importlib_external" → "importlib._bootstrap_external") to their original names; includes a test validating the alias resolution behavior (test appears duplicated in file).
Import Flow Updates
crates/vm/src/import.rs		 Reworks import_frozen to fetch frozen objects directly from vm.state.frozen and construct code objects via vm.ctx.new_code; applies resolve_frozen_alias to derive the correct __origname__ attribute value instead of using the internal module name directly.
Frozen Module Resolution
crates/vm/src/stdlib/imp.rs		 Exposes resolve_frozen_alias as a public re-export; updates find_frozen to resolve the origname via resolve_frozen_alias and convert the result to a Python string.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 With frozen modules once unnamed,
Now aliases resolve their shame!
origname shines bright and true,
Bootstrap paths shine right on through!

✨ Finishing touches
  • 📝 Generate docstrings
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Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between d3afd46 and 72f314d.

📒 Files selected for processing (3)
  • crates/vm/src/import.rs
  • crates/vm/src/stdlib/imp.rs
  • crates/vm/src/vm/mod.rs

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@youknowone youknowone marked this pull request as ready for review December 31, 2025 12:12
@youknowone youknowone merged commit 7c8df94 into RustPython:main Dec 31, 2025
12 of 13 checks passed
@youknowone youknowone deleted the origname branch December 31, 2025 12:12
@coderabbitai coderabbitai bot mentioned this pull request Feb 8, 2026
Merged
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Add proper __origname__ to frozen module

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