waybar: fix some warnings

scripts/playerctl-status

@@ -2,13 +2,9 @@
 
 PLAYERCTL="playerctl --ignore-player=mpd"
 
-STATUS="$(env LC_ALL=C $PLAYERCTL status title)"
-TITLE="$($PLAYERCTL metadata title)"
-ARTIST="$($PLAYERCTL metadata artist)"
-
-test "$STATUS" = "Playing" \
-&& printf " %s" "$TITLE" \
-&& test -n "$ARTIST" \
-&& printf " - %s" "$ARTIST"
+test "$(LC_ALL=C $PLAYERCTL status)" = "Playing" \
+&& printf " %s" "$($PLAYERCTL metadata title)" \
+&& test -n "$($PLAYERCTL metadata artist)" \
+&& printf " - %s" "$($PLAYERCTL metadata artist)"
 
 echo ""

user/waybar/default.nix

@@ -134,7 +134,7 @@ in
         "custom/vpn" = lib.mkIf (osConfig.services.vpn.enable or false) {
           format = "{}";
           exec = ''
-            mullvad status | grep "^Connected" > /dev/null \
+            ${pkgs.mullvad}/bin/mullvad status | ${pkgs.gnugrep}/bin/grep "^Connected" > /dev/null \
               && echo "" \
               || echo ""
           '';