saving uncommitted changes in /etc prior to emerge run

etckeeper/list-installed.d/50list-installed

@@ -0,0 +1,16 @@
+#!/bin/sh
+# Output to stdout a *sorted* list of all currently installed 
+# (or removed but still with config-files) packages, in the
+# format "package version\n" (or something similar).
+if [ "$LOWLEVEL_PACKAGE_MANAGER" = dpkg ]; then
+	dpkg-query -W -f '${Status}\t${Package} ${Version}\n' | \
+		egrep '(ok installed|ok config-files)' | cut -f2,3
+elif [ "$LOWLEVEL_PACKAGE_MANAGER" = rpm ]; then
+	rpm -qa --qf "%|epoch?{%{epoch}}:{0}|:%{name}-%{version}-%{release}.%{arch}\n" | sort
+elif [ "$LOWLEVEL_PACKAGE_MANAGER" = pacman ]; then
+	pacman -Q
+elif [ "$LOWLEVEL_PACKAGE_MANAGER" = qlist ]; then
+	qlist -ICv
+elif [ "$LOWLEVEL_PACKAGE_MANAGER" = cave ]; then
+	cave print-packages -r installed
+fi