Use method built in to zsh to read symlinks

powerlevel9k.zsh-theme

@@ -44,7 +44,7 @@ fi
 # Resolve the installation path
 if [[ -L "$POWERLEVEL9K_INSTALLATION_PATH" ]]; then
   # If this theme is sourced as a symlink, we need to locate the real URL
-  filename="$(realpath -P $POWERLEVEL9K_INSTALLATION_PATH 2>/dev/null || readlink -f $POWERLEVEL9K_INSTALLATION_PATH 2>/dev/null || perl -MCwd=abs_path -le 'print abs_path readlink(shift);' $POWERLEVEL9K_INSTALLATION_PATH 2>/dev/null)"
+  filename="${POWERLEVEL9K_INSTALLATION_PATH:A}"
 elif [[ -d "$POWERLEVEL9K_INSTALLATION_PATH" ]]; then
   # Directory
   filename="${POWERLEVEL9K_INSTALLATION_PATH}/powerlevel9k.zsh-theme"
@@ -664,7 +664,7 @@ prompt_dir() {
             break;
           fi
         done
-        
+
         local packageName=$(jq '.name' ${pkgFile} 2> /dev/null \
           || node -e 'console.log(require(process.argv[1]).name);' ${pkgFile} 2>/dev/null \
           || cat "${pkgFile}" 2> /dev/null | grep -m 1 "\"name\"" | awk -F ':' '{print $2}' | awk -F '"' '{print $2}' 2>/dev/null \