clean up the house a bit

system/specialisation/steam.nix

@@ -0,0 +1,112 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  boot = {
+    kernelParams = lib.mkForce [
+      "ipv6e=1"
+      "quiet"
+      "splash"
+    ];
+    plymouth = {
+      enable = true;
+      themePackages = [ pkgs.adi1090x-plymouth-themes ];
+      theme = "abstract_ring_alt";
+    };
+
+  };
+
+  # ── HDMI-CEC: Turn on TV when Steam specialisation starts ─────────────────────
+  services.udev.packages = [ pkgs.libcec ]; # ensures cec-utils is in PATH
+  services.blueman.enable = true;
+  services.seatd.enable = true;
+
+  # A user service that runs once the graphical session (Steam/GameScope) is ready
+  #systemd.user.services.cec-tv-on = {
+  #  description = "Turn on TV via HDMI-CEC when entering Steam specialisation";
+  #  wantedBy = [ "graphical-session.target" ];
+  #  after = [ "graphical-session.target" ];
+  #  serviceConfig = {
+  #    Type = "oneshot";
+  #    RemainAfterExit = true;
+  #    ExecStart = toString (
+  #      pkgs.writeShellScript "cec-tv-on.sh" ''
+  #        # Wait a moment for the HDMI link to settle
+  #        sleep 3
+
+  #        # Turn on the TV and set it as active source (most TVs understand this)
+  #        ${pkgs.libcec}/bin/cec-client -s -d 1 <<EOF
+  #        on 0
+  #        as
+  #        EOF
+
+  #        # Alternative one-liner if the above somehow fails:
+  #        # echo 'on 0' | ${pkgs.libcec}/bin/cec-client -s -d 1
+  #        # echo 'as'  | ${pkgs.libcec}/bin/cec-client -s -d 1
+  #      ''
+  #    );
+  #  };
+  #};
+
+  # THIS is the important part – direct boot into the Gamescope Steam session
+  services.greetd = {
+    enable = true;
+    restart = true;
+    settings = {
+      # Tell greetd to auto-start the official gamescope steam session immediately
+      default_session = {
+        command = "${pkgs.gamescope}/bin/gamescope --prefer-outpu HDMI-A-2 --hdr-enabled --steam --mangoapp  -- steam -pipewire-dmabuf -gamepadui -steamos3 > /dev/null 2>&1";
+        user = "game";
+      };
+    };
+  };
+
+  # Auto-login the game user (no password prompt ever)
+  services.getty.autologinUser = "game";
+  # Make sure the user service starts automatically
+  systemd.user.targets.graphical-session = {
+    # This target already exists, we just ensure it’s active
+    unitConfig = {
+      RefuseManualStart = false;
+      RefuseManualStop = false;
+    };
+  };
+
+  environment = {
+    systemPackages = with pkgs; [
+      mangohud
+      gamemode
+      gamescope-wsi
+    ];
+    variables = {
+      #LIBSEAT_BACKEND = "logind";
+    };
+
+  };
+
+  programs = {
+    gamescope = {
+      enable = true;
+      capSysNice = true;
+    };
+
+    steam = {
+      enable = true;
+      remotePlay.openFirewall = true;
+      dedicatedServer.openFirewall = true;
+      extraCompatPackages = with pkgs; [
+        gamescope
+        mangohud
+        gamemode
+        gamescope-wsi
+      ];
+      gamescopeSession = {
+        enable = true;
+      };
+    };
+  };
+}