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setup-hook.sh
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setup-hook.sh
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pytestXdistHook() {
pytestFlagsArray+=(
"--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
# until we have dependency mechanism in generic builder, we need to use this ugly hack.
if [ -z "${dontUsePytestXdist-}" ] && [ -z "${dontUsePytestCheck-}" ]; then
if [[ " ${preDistPhases:-} " =~ " pytestCheckPhase " ]]; then
preDistPhases+=" "
preDistPhases="${preDistPhases/ pytestCheckPhase / pytestXdistHook pytestCheckPhase }"
else
preDistPhases+=" pytestXdistHook"
fi
fi