Steam: Difference between revisions

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+=== Gamescope Compositor / "Boot to Steam Deck" ===
+Gamescope can function as a minimal desktop environment, meaning you can launch it from a TTY and have an experience very similar to the Steam Deck hardware console.
+<syntaxHighlight lang=nix>
+programs = {
+  gamescope = {
+    enable = true;
+    capSysNice = true;
+  };
+  steam = {
+    enable = true;
+    gamescopeSession.enable = true;
+};
+hardware.xone.enable = true; # support for the xbox controller USB dongle
+services.getty.autologinUser = "your_user";
+environment = {
+  systemPackages = pkgs.mangohud;
+  loginShellInit = ''
+    [[ "$(tty)" = "/dev/tty1" ]] && ./gs.sh
+  '';
+};
+</syntaxHighlight>
+==== gs.sh ====
+<syntaxHighlight lang=bash>
+#!/usr/bin/env bash
+set -xeuo pipefail
+gamescopeArgs=(
+    --adaptive-sync # VRR support
+    --hdr-enabled
+    --mangoapp # performance overlay
+    --rt
+    --steam
+)
+steamArgs=(
+    -pipewire-dmabuf
+    -tenfoot
+)
+mangoConfig=(
+    cpu_temp
+    gpu_temp
+    ram
+    vram
+)
+mangoVars=(
+    MANGOHUD=1
+    MANGOHUD_CONFIG="$(IFS=,; echo "${mangoConfig[*]}")"
+)
+export "${mangoVars[@]}"
+exec gamescope "${gamescopeArgs[@]}" -- steam "${steamArgs[@]}"
+</syntaxHighlight>