GeezerVison is showing github.com — gh-119696: Install build-details.json with relative paths by itamaro · Pull Request #161907 · python/cpython
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itamaro
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Nov 12, 2026
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edited by bedevere-app
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make install writes build-details.json (PEP 739) with absolute paths, so the file is wrong once the installation is moved. Fixing that is one of the steps towards relocatable CPython installations.
PEP 739 allows the paths to be relative to base_prefix, and base_prefix to be relative to the file's directory; generate-build-details.py already implements that behind --relative-paths --config-file-path. Pass those flags from the Makefile.
The installed-file tests now resolve the paths like a consumer would, instead of skipping on a relocated installation.
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`make install` writes `build-details.json` (PEP 739) with absolute
paths, so the file is wrong once the installation is moved. Fixing
that is one of the steps towards relocatable CPython installations.
PEP 739 allows the paths to be relative to `base_prefix`, and
`base_prefix` to be relative to the file's directory;
`generate-build-details.py` already implements that behind
`--relative-paths --config-file-path`. Pass those flags from the
Makefile.
The installed-file tests now resolve the paths like a consumer would,
instead of skipping on a relocated installation.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
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