fix steam black screen via -cef-disable-gpu-compositing overlay

config/applications/steam.desktop

@@ -1,7 +1,7 @@
 [Desktop Entry]
 Name=Steam
 Comment=Application for managing and playing games on Steam
-Exec=env DISPLAY=:0 steam -no-cef-sandbox %U
+Exec=env DISPLAY=:0 steam %U
 Icon=steam
 Terminal=false
 Type=Application

configuration.nix

@@ -93,6 +93,13 @@
   };
 
   nixpkgs.config.allowUnfree = true;
+  nixpkgs.overlays = [
+    (final: prev: {
+      steam = prev.steam.override {
+        extraArgs = "-cef-disable-gpu-compositing";
+      };
+    })
+  ];
 
   environment.systemPackages = with pkgs; [
     wget