audio-server: fix ledfx with noXlibs

modules/audio-server.nix

@@ -102,13 +102,24 @@ in
 
     nixpkgs.overlays = [
       (final: prev: {
+        ledfx = prev.ledfx.overrideAttrs ({ postPatch ? "", ... }: {
+          postPatch = postPatch + ''
+            substituteInPlace setup.py \
+              --replace '"pystray>=0.17",' ""
+          '';
+        });
+
         python3 = prev.python3.override {
-          packageOverrides = python-final: python-prev: {
+          packageOverrides = python-final: python-prev:
+          (lib.optionalAttrs config.environment.noXlibs {
+            # remove x11 dependencies from pkgs.ledfx
+            pystray = null;
+          } // {
             # avoid dependency on x11 libraries
             samplerate = python-prev.samplerate.overrideAttrs (_: {
               dontUseSetuptoolsCheck = true;
             });
-          };
+          });
         };
         python3Packages = final.python3.pkgs;
       })