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-rw-r--r--nixos/modules/programs/steam.nix63
1 files changed, 63 insertions, 0 deletions
diff --git a/nixos/modules/programs/steam.nix b/nixos/modules/programs/steam.nix
new file mode 100644
index 00000000000..ff4deba2bf0
--- /dev/null
+++ b/nixos/modules/programs/steam.nix
@@ -0,0 +1,63 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.programs.steam;
+
+  steam = pkgs.steam.override {
+    extraLibraries = pkgs: with config.hardware.opengl;
+      if pkgs.hostPlatform.is64bit
+      then [ package ] ++ extraPackages
+      else [ package32 ] ++ extraPackages32;
+  };
+in {
+  options.programs.steam = {
+    enable = mkEnableOption "steam";
+
+    remotePlay.openFirewall = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        Open ports in the firewall for Steam Remote Play.
+      '';
+    };
+
+    dedicatedServer.openFirewall = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        Open ports in the firewall for Source Dedicated Server.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    hardware.opengl = { # this fixes the "glXChooseVisual failed" bug, context: https://github.com/NixOS/nixpkgs/issues/47932
+      enable = true;
+      driSupport = true;
+      driSupport32Bit = true;
+    };
+
+    # optionally enable 32bit pulseaudio support if pulseaudio is enabled
+    hardware.pulseaudio.support32Bit = config.hardware.pulseaudio.enable;
+
+    hardware.steam-hardware.enable = true;
+
+    environment.systemPackages = [ steam steam.run ];
+
+    networking.firewall = lib.mkMerge [
+      (mkIf cfg.remotePlay.openFirewall {
+        allowedTCPPorts = [ 27036 ];
+        allowedUDPPortRanges = [ { from = 27031; to = 27036; } ];
+      })
+
+      (mkIf cfg.dedicatedServer.openFirewall {
+        allowedTCPPorts = [ 27015 ]; # SRCDS Rcon port
+        allowedUDPPorts = [ 27015 ]; # Gameplay traffic
+      })
+    ];
+  };
+
+  meta.maintainers = with maintainers; [ mkg20001 ];
+}