Disable SYSTEM_VERSION_COMPAT when querying interpreters on macOS#18452
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Disable SYSTEM_VERSION_COMPAT when querying interpreters on macOS#18452
SYSTEM_VERSION_COMPAT when querying interpreters on macOS#18452Conversation
Conda interpreters built against older macOS SDKs (e.g., MACOSX_DEPLOYMENT_TARGET=10.15) trigger Apple's compatibility shim, causing `platform.mac_ver()` to return "10.16" instead of the real macOS version. This leads to incorrect platform tags (e.g., `macosx_10_16` instead of `macosx_14_0`), which prevents uv from seeing the correct list of available packages. Setting `SYSTEM_VERSION_COMPAT=0` on the subprocess disables the shim so the script sees the true OS version. Fixes #14267
charliermarsh
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Mar 14, 2026
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I worry this may break cases that we can't predict, but I don't know how else to build confidence in the change.
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I'm also a little worried about that |
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I reproduced the issue in #18461 and cherry-picking this fix resolved it. |
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Closes #14267
Replaces #18436 — adding my review because I cannot push there
Replaces #18416