feat(star-citizen): install

modules/nixos/features/gaming.nix

@@ -19,6 +19,7 @@
 
   programs = {
     gamemode.enable = true;
+    gamescope.enable = true;
     steam = {
       enable = true;
       gamescopeSession.enable = true;

modules/nixos/features/star-citizen.nix

@@ -0,0 +1,23 @@
+{
+  # keep-sorted start
+  inputs,
+  system,
+  # keep-sorted end
+  ...
+}:
+{
+  nix.settings = {
+    substituters = [ "https://nix-citizen.cachix.org" ];
+    trusted-public-keys = [ "nix-citizen.cachix.org-1:lPMkWc2X8XD4/7YPEEwXKKBg+SVbYTVrAaLA2wQTKCo=" ];
+  };
+
+  environment.systemPackages = [
+    inputs.nix-citizen.packages.${system}.rsi-launcher
+  ];
+
+  zramSwap = {
+    enable = true;
+    memoryPercent = 100;
+    writebackDevice = "/dev/sda1";
+  };
+}