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Fix: Patch scheme to posix_prefix if posix_local and --prefix is specified #13634

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Fix: Patch scheme to posix_prefix if posix_local and --prefix is specified #13634

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Patch scheme to posix_prefix if posix_local and --prefix is specified
cielavenir Oct 26, 2025
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cielavenir Oct 26, 2025
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1 change: 1 addition & 0 deletions news/13634.bugfix.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Patch scheme to posix_prefix if posix_local and --prefix is specified
6 changes: 6 additions & 0 deletions src/pip/_internal/locations/_sysconfig.py
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Expand Up @@ -155,6 +155,12 @@ def get_scheme(
else:
scheme_name = _infer_prefix()

# Special case: When installing into a custom prefix, use posix_prefix
# instead of posix_local because it should be used only to redirecting
# to /usr/local.
if prefix is not None and scheme_name == "posix_local":
scheme_name = "posix_prefix"

# Special case: When installing into a custom prefix, use posix_prefix
# instead of osx_framework_library. See _should_use_osx_framework_prefix()
# docstring for details.
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