me like nix
1{ ... }: {
2 flake.modules.nixos.gaming =
3 { pkgs, lib, ... }:
4 let
5 # Steam/gamescope calls steamos-session-select when the user presses
6 # "Switch to Desktop". Without this script, the button does nothing.
7 steamos-session-select = pkgs.writeShellScriptBin "steamos-session-select" ''
8 echo "Switching session to: $1"
9 '';
10
11 # Pin gamescope to 3.14.29 — versions 3.15+ crash on NVIDIA due to
12 # a confirmed driver bug (#5701801) in Vulkan YCbCr sampler pipeline compilation.
13 gamescope_3_14 = pkgs.gamescope.overrideAttrs (old: {
14 version = "3.14.29";
15 src = pkgs.fetchFromGitHub {
16 owner = "ValveSoftware";
17 repo = "gamescope";
18 tag = "3.14.29";
19 fetchSubmodules = true;
20 hash = "sha256-q3HEbFqUeNczKYUlou+quxawCTjpM5JNLrML84tZVYE=";
21 };
22 patches = lib.take 2 (old.patches or [ ]);
23 mesonFlags = builtins.filter
24 (
25 f:
26 builtins.match ".*glm_include_dir.*" f == null
27 && builtins.match ".*stb_include_dir.*" f == null
28 )
29 (old.mesonFlags or [ ]);
30 env = (old.env or { }) // {
31 CMAKE_POLICY_VERSION_MINIMUM = "3.5";
32 };
33 postPatch =
34 builtins.replaceStrings [ "patchShebangs default_extras_install.sh" ] [ "" ] (
35 old.postPatch or ""
36 )
37 + ''
38 rm -rf subprojects/glm subprojects/glm.wrap subprojects/stb subprojects/stb.wrap
39 mkdir -p subprojects/glm subprojects/stb
40
41 cat > subprojects/glm/meson.build << 'GLMEOF'
42 project('glm', 'cpp', version: '1.0.0')
43 glm_dep = declare_dependency(include_directories: include_directories('${lib.getInclude pkgs.glm}/include', is_system: true))
44 meson.override_dependency('glm', glm_dep)
45 GLMEOF
46
47 cat > subprojects/stb/meson.build << 'STBEOF'
48 project('stb', 'c', version: '0.0.1')
49 stb_dep = declare_dependency(include_directories: include_directories('${lib.getInclude pkgs.stb}/include/stb', is_system: true))
50 meson.override_dependency('stb', stb_dep)
51 STBEOF
52 '';
53 });
54 in
55 {
56 # ZRAM swap to prevent OOM freezes
57 zramSwap = {
58 enable = true;
59 memoryPercent = 50;
60 };
61
62 # Kill runaway processes before the system locks up
63 services.earlyoom = {
64 enable = true;
65 freeMemThreshold = 5;
66 freeSwapThreshold = 5;
67 enableNotifications = true;
68 };
69
70 programs.steam = {
71 enable = true;
72 remotePlay.openFirewall = true;
73 gamescopeSession = {
74 enable = true;
75 args = [
76 "-r"
77 "120"
78 "-R"
79 "120"
80 ];
81 env = {
82 STEAM_DESKTOP_SESSION = "niri";
83 ENABLE_GAMESCOPE_WSI = "1";
84 };
85 };
86 extraCompatPackages = with pkgs; [
87 proton-ge-bin
88 ];
89 };
90
91 programs.gamemode.enable = true;
92
93 programs.gamescope = {
94 enable = true;
95 capSysNice = false;
96 package = gamescope_3_14;
97 };
98
99 environment.systemPackages = [
100 steamos-session-select
101 ];
102
103 boot.kernelParams = [ "split_lock_mitigate=0" ];
104
105 security.pam.loginLimits = [
106 {
107 domain = "*";
108 type = "soft";
109 item = "nofile";
110 value = "8192";
111 }
112 ];
113 };
114}