saving uncommitted changes in /etc prior to emerge run

paludis/hooks/sync_all_post/sync_cache.bash

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+source "${PALUDIS_EBUILD_DIR}/echo_functions.bash"
+
+PORTDIR="/usr/portage"
+
+[[ -z ${PORTDIR} || "$(dirname ${PORTDIR})" == "/" ]] && die "PORTDIR empty or pointing to root!"
+
+
+die() {
+	eerror "${1}"
+	exit 1
+}
+
+einfo "syncing metadata cache"
+
+for i in gentoo games-overlay desktop-overlay media-overlay prism-overlay libressl arx-libertatis dotnet haskell qt sage-on-gentoo torbrowser tox-overlay hasufell-overlay; do
+	egencache --jobs=8 --repo=${i} --update --update-use-local-desc \
+		|| die "egencache failed for overlay ${i}!"
+done