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PEP-739 build-details generation is broken when --relative-paths is specified #136264
Description
Bug report
Bug description:
With a freshly python built from main (on MacOS in this repro, but also tested on Linux), trying to generating the PEP-739 build-details with the --relative-paths option fails.
$ ./python.exe -E Tools/build/generate-build-details.py /tmp/build-details.json --relative-pathsTraceback:
Traceback (most recent call last):
File "/Users/itamaro/work/cpython/Tools/build/generate-build-details.py", line 194, in <module>
main()
~~~~^^
File "/Users/itamaro/work/cpython/Tools/build/generate-build-details.py", line 186, in main
make_paths_relative(data, args.config_file_path)
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/itamaro/work/cpython/Tools/build/generate-build-details.py", line 157, in make_paths_relative
new_path = os.path.relpath(current_path, data['base_prefix'])
File "/Users/itamaro/work/cpython/Lib/posixpath.py", line 519, in relpath
path = os.fspath(path)
TypeError: expected str, bytes or os.PathLike object, not dict
CPython versions tested on:
CPython main branch, 3.15, 3.14
Operating systems tested on:
macOS, Linux
Activity
pythongh-136264: Fix PEP-739 build-details generation with relative-p…
StanFromIreland commentedon Jul 4, 2025
itamaro commentedon Jul 13, 2025
cc @FFY00
itamaro commentedon Aug 3, 2025
pfmoore commentedon Aug 3, 2025
gh-136264: Fix ``--relative-paths`` for PEP 739's build-details.json (#…
pythongh-136264: Fix ``--relative-paths`` for PEP 739's build-details…
[3.14] gh-136264: Fix ``--relative-paths`` for PEP 739's build-detail…
pythongh-136264: Fix ``--relative-paths`` for PEP 739's build-details…
emmatyping commentedon Sep 10, 2025
Is there any more work to do here? Looks like the PRs to fix this have been merged and if I run
it works fine.