fix(steam): hack to work around annoying clipboard thin

modules/nixos/steam.nix

@@ -25,6 +25,15 @@ in {
       extraPackages = with pkgs; [
         mono gtk3 gtk3-x11 libgdiplus zlib nss SDL2
       ];
+      # Work around xwayland-satellite#252 by clearing the clipboard
+      # before launching Steam.
+      #
+      # https://github.com/Supreeeme/xwayland-satellite/issues/252
+      package = pkgs.steam.override {
+	extraPreBwrapCmds =
+	  let wl-copy = lib.getExe' pkgs.wl-clipboard "wl-copy";
+	  in "${wl-copy} --clear";
+      };
     };
 
     programs.gamemode = {
@@ -39,7 +48,8 @@ in {
       enable32Bit = true;
     };
 
-    environment.persistence.${config.sydnix.impermanence.persistDirectory}.users =
+    environment.persistence
+    .${config.sydnix.impermanence.persistDirectory}.users =
       builtins.listToAttrs
         (builtins.map
           (user: {