[buildiso/buildpkg] simplify chroots and sets dir

bin/buildiso.in

@@ -180,6 +180,9 @@ if [[ "$arch" == 'x86_64' ]]; then
 	pacman_conf_arch='multilib'
 fi
 
+chroots_iso="${chroots_dir}/buildiso"
+sets_dir_iso="${sets_dir}/iso"
+
 cache_dir_lng="${cache_dir}/lng/${arch}"
 cache_dir_xorg="${cache_dir}/xorg/${arch}"
 cache_dir_iso="${cache_dir}/iso"

bin/buildpkg.in

@@ -149,6 +149,9 @@ while getopts "${opts}" arg; do
 	esac
 done
 
+chroots_pkg="${chroots_dir}/buildpkg"
+sets_dir_pkg="${sets_dir}/pkg"
+
 if [[ "${arch}" == 'multilib' ]]; then
 	pacman_conf_arch='multilib'
 	base_packages+=('multilib-devel')