Remove the extra variable and inline the test

internal/configure.zsh

@@ -10,8 +10,6 @@ typeset -gr __p9k_zshrc=${${:-$__p9k_zd/.zshrc}:A}
 typeset -gr __p9k_zshrc_u=$__p9k_zd_u/.zshrc
 typeset -gr __p9k_root_dir_u=${${${(q)__p9k_root_dir}/#(#b)${(q)HOME}(|\/*)/'~'$match[1]}//\%/%%}
 
-typeset -gr __p9k_writeable_zsh=$(test ! -e $__p9k_zshrc || test -w $__p9k_zshrc)
-
 function _p9k_can_configure() {
   [[ $1 == '-q' ]] && local -i q=1 || local -i q=0
   function $0_error() {

internal/wizard.zsh

@@ -1506,7 +1506,7 @@ function ask_zshrc_edit() {
       r) return 1;;
       n) return 0;;
       y)
-        [[ $__p9k_writeable_zsh ]] || echo "Zshrc is readonly ignoring..."; return
+        [[ ! -e $__p9k_zshrc || -w $__p9k_zshrc ]] || echo "Zshrc is readonly ignoring..."; return
         write_zshrc=1
         if [[ -n $zshrc_content ]]; then
           zshrc_backup="$(mktemp ${TMPDIR:-/tmp}/.zshrc.XXXXXXXXXX)" || quit -c