14 lines
622 B
Diff
14 lines
622 B
Diff
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diff --git a/src/pip/_internal/operations/install/wheel.py b/src/pip/_internal/operations/install/wheel.py
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index e7315ee4..4e36b03d 100644
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--- a/src/pip/_internal/operations/install/wheel.py
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+++ b/src/pip/_internal/operations/install/wheel.py
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@@ -615,6 +615,8 @@ def install_wheel(
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direct_url=None, # type: Optional[DirectUrl]
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):
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# type: (...) -> None
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+ _temp_dir_for_testing = (
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+ _temp_dir_for_testing or os.environ.get("NIX_PIP_INSTALL_TMPDIR"))
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with TempDirectory(
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path=_temp_dir_for_testing, kind="unpacked-wheel"
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) as unpacked_dir, ZipFile(wheel_path, allowZip64=True) as z:
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