# this hook marks files which are about to change for generating vcdiffs hook() { type -P xdelta3 > /dev/null || return 0 env # create links to preserve old versions of repodata find $XBPS_REPOSITORY -name "${XBPS_TARGET_MACHINE}-repodata" | while read; do rm "${REPLY}.genVcdiff" || true cp "${REPLY}" "${REPLY}.genVcdiff" done }