=== modified file 'build'
--- build	2017-11-15 00:33:54 +0000
+++ build	2017-11-14 09:47:48 +0000
@@ -1,19 +1,9 @@
 #!/bin/zsh
-autoload -Uz colors; colors
-setopt no_unset warn_create_global extended_glob
 set -x
 cd $0:h || exit
 
-# helper that prints out error message and exits
-die() {
-	print -r - "$fg_bold[red]*$reset_color $@" >&2
-	exit 1
-}
-
 name=$1
 shift
-target=$(base64 -w 0 <<<${(j::)${(oq)@}} | tr +/ -_).$name \
-	|| die "Failed to generate target name"
 target=${(j::)${(oq)@}}.$name
 mkdir -p meta || exit $?
 redo-ifchange meta/$target

=== modified file 'common.zsh'
--- common.zsh	2017-11-15 00:33:54 +0000
+++ common.zsh	2017-11-15 00:20:53 +0000
@@ -26,9 +26,8 @@
 
 decode_args() {
 	typeset -gA vars
-	local arg decoded
-	decoded=$(tr <<<${BASE##*/} -_ +/ | base64 -d)
-	for arg in "${(s::Q)decoded}"; do
+	local arg
+	for arg in "${(s::Q)${BASE##*/}}"; do
 		if [[ "$arg" != *=* ]]; then
 			echo >&2 "Malformed argument: ${(qqq)arg}"
 			exit 1
@@ -119,8 +118,7 @@
 	else
 		run=( redo-ifchange )
 	fi
-	target=$(base64 -w 0 <<<${(j::)${(oq)new_vars}} | tr +/ -_).$name \
-		|| die "Failed to generate target name"
+	target=${(j::)${(oq)new_vars}}.$name
 	"$run[@]" meta/$target || die "Building $name failed ($target)"
 
 	if (($#lift)); then