PKGBUILDs/alarm/devtools-alarm/0001-makechrootpkg-cache-dir.patch

diff -urN a/makechrootpkg.in b/makechrootpkg.in
--- a/makechrootpkg.in	2013-11-07 06:57:03.000000000 -0700
+++ b/makechrootpkg.in	2014-01-21 18:25:01.778675214 -0700
@@ -48,6 +48,7 @@
 	echo ''
 	echo "Default makepkg args: $makepkg_args"
 	echo ''
+	echo '-C <dir>   Set pacman cache to pass to arch-nspawn'
 	echo 'Flags:'
 	echo '-h         This help'
 	echo '-c         Clean the chroot before building'
@@ -66,13 +67,14 @@
 	exit 1
 }
 
-while getopts 'hcur:I:l:nTD:d:' arg; do
+while getopts 'hcuC:r:I:l:nTD:d:' arg; do
 	case "$arg" in
 		h) usage ;;
 		c) clean_first=true ;;
 		D) bindmounts_ro+=(--bind-ro="$OPTARG") ;;
 		d) bindmounts_rw+=(--bind="$OPTARG") ;;
 		u) update_first=true ;;
+		C) cache_dir="$OPTARG" ;;
 		r) passeddir="$OPTARG" ;;
 		I) install_pkgs+=("$OPTARG") ;;
 		l) copy="$OPTARG" ;;
@@ -91,6 +93,10 @@
 [[ ! -d $chrootdir ]] && die "No chroot dir defined, or invalid path '%s'" "$passeddir"
 [[ ! -d $chrootdir/root ]] && die "Missing chroot dir root directory. Try using: mkarchroot %s/root base-devel" "$chrootdir"
 
+if [ -n "$cache_dir" ]; then
+	cache_dir="-c $cache_dir"
+fi
+
 # Detect chrootdir filesystem type
 chroottype=$(stat -f -c %T "$chrootdir")
 
@@ -373,7 +379,7 @@
 
 download_sources
 
-if arch-nspawn "$copydir" \
+if arch-nspawn $cache_dir "$copydir" \
 	--bind-ro="$PWD:/startdir_host" \
 	--bind-ro="$SRCDEST:/srcdest_host" \
 	"${bindmounts_ro[@]}" "${bindmounts_rw[@]}" \