Game scope

hosts/flubber-machine/default.nix

@@ -111,6 +111,7 @@
       distractions.discord.enable = true;
       distractions.discord.vesktop = true;
       distractions.steam.enable = true;
+      distractions.steam.gamescope = true;
       # tools
       tools.direnv.enable = true;
       tools.easyeffects.enable = true;

modules/software/distractions/steam.nix

@@ -6,6 +6,7 @@ let
 in {
   options.modules.software.distractions.steam = {
     enable = mkEnableOption "Enable Steam, the game distribution software";
+    gamescope = mkEnableOption "Enable gamescope, a mini-compositor tuned for games";
     session = mkEnableOption "Enable a Steam Deck-like session powered by gamescope";
   };
 
@@ -16,7 +17,7 @@ in {
       package = pkgs.steam.override {
         # required for programs to run sometimes
         # see: https://github.com/NixOS/nixpkgs/issues/162562#issuecomment-1229444338
-        extraPkgs = (pkgs: with pkgs; [
+        extraPkgs = (pkgs: (optional cfg.gamescope pkgs.gamescope) ++ (with pkgs; [
           libXcursor
           libXi
           libXinerama
@@ -28,7 +29,7 @@ in {
           libkrb5
           keyutils
           gperftools
-        ]);
+        ]));
         extraEnv = {
           # https://github.com/gloriouseggroll/proton-ge-custom
           PROTON_USE_WAYLAND = "1";
@@ -45,6 +46,26 @@ in {
       dedicatedServer.openFirewall = true;
     };
 
+    # TODO: make it so that this wrapper encompasses steam's gamescope
+    # this would make it so we don't have to put the config each time, like this:
+    # gamescope --expose-wayland --adaptive-sync -f -W 1920 -H 1080 -w 1920 -h 1080 -- %command%
+    programs.gamescope = {
+      enable = cfg.gamescope;
+      args = [
+        "--expose-wayland"
+
+        "--adaptive-sync"
+
+        "-f"
+
+        "-W 1920"
+        "-H 1080"
+
+        "-w 1920"
+        "-h 1080"
+      ];
+    };
+
     # enable windows NT sync primitive driver (semaphores, mutexes, etc.)
     # improves performance on wine 11+ and proton 11+
     boot.kernelModules = [ "ntsync" ];