snowhawk: star-citizen setup

hosts/snowhawk/configuration.nix

@@ -53,6 +53,7 @@
     syncthing.enable = true;
     user.enable = true;
     wake-on-lan.enable = true;
+    star-citizen.enable = true;
   };
 
   # Enable automatic login for the user.
@@ -80,11 +81,6 @@
     killall
 
     linux-manual
-
-    (inputs.nix-gaming.packages.${pkgs.system}.star-citizen.override {
-      useUmu = true;
-      location = "/data/star-citizen";
-    })
   ];
 
   fonts.packages = with pkgs; [
@@ -96,6 +92,14 @@
 
   hardware.keyboard.uhk.enable = true;
 
+  swapDevices = [{
+    device = "/swap";
+    size = 16 * 1024;
+  }];
+
+  # Also recommended, either as an alternative or in addition
+  zramSwap.enable = true;
+
   virtualisation = {
     libvirtd.enable = true;
   };

modules/star-citizen.nix

@@ -0,0 +1,24 @@
+{ lib, config, inputs, pkgs, ... }:
+
+let
+  cfg = config.snowhawk.star-citizen;
+in
+{
+  options.snowhawk.star-citizen = {
+    enable = lib.mkEnableOption "star-citizen";
+  };
+
+  config = lib.mkIf cfg.enable {
+    boot.kernel.sysctl = {
+      "vm.max_map_count" = 16777216;
+      "ds.file-max" = 524288;
+    };
+
+    environment.systemPackages = [
+      (inputs.nix-gaming.packages.${pkgs.system}.star-citizen.override {
+        useUmu = true;
+        location = "/data/star-citizen";
+      })
+    ];
+  };
+}