metadep-expander

#!/bin/sh
# Expand metapackage dependenies
#
APT_CACHE=$1
f=$2
[ -n "$f" ] || exit 0

metapkgs="$(grep -e @META "$f" | grep -v '^#')"
[ -n "metapkgs" ] || exit 0

for metapkg in $metapkgs; do
	metapkg=${metapkg%@META}
	if ! "$APT_CACHE" show "$metapkg" > /dev/null; then
		echo "** warning: Metapackage '$metapkg' not available!!!" 1>&2
		echo "** warning: '$metapkg' removed from $f" 1>&2
		continue
	fi
	t="`mktemp`"
	LANG=C "$APT_CACHE" depends "$metapkg"| grep 'Depends:' |
		cut -f4 -d ' ' |grep -v '<' > "$t"
	if [ -s "$t" ]; then
		sed -i -e "/$metapkg@META/r $t" -e "s/$metapkg@META/$metapkg/" "$f"
	fi
	sed -i "s/$metapkg@META/$metapkg/" "$f"
	rm -f "$t"
done

# Cleanup not available metapackages
sed -i "/@META/d" "$f"

exit 0