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python3Packages.pytest-xdist: Treat --forked problems on darwin #194308

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Oct 4, 2022
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python3Packages.pytest-xdist: Treat --forked problems on darwin #194308

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8 changes: 8 additions & 0 deletions pkgs/development/python-modules/pytest-xdist/setup-hook.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,14 @@ pytestXdistHook() {
"--numprocesses=$NIX_BUILD_CORES"
"--forked"
)

# Using --forked on darwin leads to crashes when fork safety is
# enabled. This often happens when urllib tries to request proxy
# settings on MacOS through `urllib.request.getproxies()`
# - https://github.com/python/cpython/issues/77906
if [[ "$OSTYPE" == "darwin"* ]]; then
export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
fi
}

# the flags should be added before pytestCheckHook runs so
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