=== modified file 'common.zsh'
--- common.zsh	2017-11-30 18:15:38 +0000
+++ common.zsh	2017-11-15 16:41:23 +0000
@@ -41,17 +41,13 @@
 	done
 }
 
-print-meta() {
+finish() {
 	local -a arglist
 	local k
 	for k in ${(ko)vars}; do
 		arglist+=( "$k=$vars[$k]" )
 	done
-	printf "%s" "${(j::)arglist}"
-}
-
-finish() {
-	print-meta >$OUT
+	printf >$OUT "%s" "${(j::)arglist}"
 	exit 0
 }
 
@@ -74,29 +70,6 @@
 	(( $#empty )) && die "required parameters are empty: ${(@q)empty}"
 }
 
-filehash() {
-	if [[ -f $1 ]]; then
-		sha256sum $1
-	else
-		printf '-  %s\n' $1
-	fi
-}
-
-ifchange() {
-	local arg
-	redo-ifchange "$@"
-	(($+vars[__deps__])) || vars[__deps__]=''
-	for arg in "$@"; do
-		vars[__deps__]+=$(filehash $arg)
-	done
-}
-
-exit-if-unchanged() {
-	[[ -f $FILE ]] || return
-	[[ "$(<$FILE)" == "$(print-meta)" ]] || return
-	cp $FILE $OUT
-	exit 0
-}
 
 depend() {
 	# TODO: edit this comment copied over from confz

=== modified file 'default.alpine-base.do'
--- default.alpine-base.do	2017-11-30 18:15:38 +0000
+++ default.alpine-base.do	2017-11-15 16:26:57 +0000
@@ -21,8 +21,6 @@
 		print -rl - $vars[alpine_mirror]/$vars[release]/$repo >> $vars[build_dir]/etc/apk/repositories || die "failed to set up apk"
 	done
 
-	exit-if-unchanged
-
 	apk_args+=(
 		--update-cache
 		--root $vars[build_dir]