multimon-ng: fix for darwin (#131522)

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>

pkgs/applications/radio/multimon-ng/default.nix

@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "01716cfhxfzsab9zjply9giaa4nn4b7rm3p3vizrwi7n253yiwm2";
   };
 
-  buildInputs = [ libpulseaudio libX11 ];
+  buildInputs = lib.optionals stdenv.isLinux [ libpulseaudio libX11 ];
 
   nativeBuildInputs = [ cmake ];
 
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     '';
     homepage = "https://github.com/EliasOenal/multimon-ng";
     license = licenses.gpl2Only;
-    platforms = platforms.linux;
+    platforms = platforms.unix;
     maintainers = with maintainers; [ markuskowa ];
   };
 }