vesktop: add withSystemVencord

pkgs/by-name/ve/vesktop/package.nix

@@ -19,6 +19,9 @@
 , nodePackages
 , speechd
 , withTTS ? true
+  # Enables the use of vencord from nixpkgs instead of
+  # letting vesktop manage it's own version
+, withSystemVencord ? true
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "vesktop";
@@ -86,9 +89,8 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   patches = [
-    (substituteAll { inherit vencord; src = ./use_system_vencord.patch; })
     ./disable_update_checking.patch
-  ];
+  ] ++ lib.optional withSystemVencord (substituteAll { inherit vencord; src = ./use_system_vencord.patch; });
 
   ELECTRON_SKIP_BINARY_DOWNLOAD = 1;