void-packages/common/environment/setup/git.sh

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# If XBPS_USE_BUILD_MTIME is enabled in conf file don't continue.
# only run this, if SOURCE_DATE_EPOCH isn't set.
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if [ -z "$XBPS_GIT_CMD" ]; then
msg_error "BUG: environment/setup: XBPS_GIT_CMD is not set\n"
fi
if [ -n "$XBPS_USE_BUILD_MTIME" ]; then
unset SOURCE_DATE_EPOCH
elif [ -z "${SOURCE_DATE_EPOCH}" ]; then
if [ -n "$IN_CHROOT" ]; then
msg_error "xbps-src's BUG: SOURCE_DATE_EPOCH is undefined\n"
fi
# check if the template is under version control:
if [ -n "$basepkg" -a -z "$($XBPS_GIT_CMD -C ${XBPS_SRCPKGDIR}/${basepkg} ls-files template)" ]; then
export SOURCE_DATE_EPOCH="$(stat -c %Y ${XBPS_SRCPKGDIR}/${basepkg}/template)"
else
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export SOURCE_DATE_EPOCH="$($XBPS_GIT_CMD -C ${XBPS_DISTDIR} log --pretty='%ct' -n1 HEAD)"
fi
fi
# if XBPS_USE_GIT_REVS is enabled in conf file,
# compute XBPS_GIT_REVS to use in pkg hooks
if [ -z "$XBPS_USE_GIT_REVS" ]; then
unset XBPS_GIT_REVS
elif [ -z "$XBPS_GIT_REVS" ]; then
if [ -n "$IN_CHROOT" ]; then
msg_error "xbps-src's BUG: XBPS_GIT_REVS is undefined\n"
else
export XBPS_GIT_REVS="$($XBPS_GIT_CMD -C "${XBPS_DISTDIR}" rev-parse --verify --short HEAD)"
fi
fi