=== modified file 'default.alpine-base.do'
--- default.alpine-base.do	2017-11-15 01:12:57 +0000
+++ default.alpine-base.do	2017-11-15 01:06:50 +0000
@@ -17,14 +17,14 @@
 		# Fetch APKINDEX files to see if they changed
 		depend download-file %filename url=$vars[alpine_mirror]/$vars[release]/$repo/$vars[arch]/APKINDEX.tar.gz
 		redo-hash $vars[filename]
-		# unset "vars[filename]"
-		print -rl - $vars[alpine_mirror]/$vars[release]/$repo >> $vars[build_dir]/etc/apk/repositories || die "failed to set up apk"
+		unset vars[filename]
+		print -rl - $vars[alpine_mirror]/$vars[release]/$repo >> ${build_dir}/etc/apk/repositories || die "failed to set up apk"
 	done
 
 	apk_args+=(
 		--update-cache
 		--root $vars[build_dir]
-		--arch $vars[arch]
+		--arch $arch
 		--keys-dir /etc/apk/keys/
 		--initdb
 		add alpine-base