port to flakes

nixos/modules/steam.nix

@@ -0,0 +1,23 @@
+{ config, pkgs, lib, ... }:
+with lib;
+let
+  cfg = config.dadada.steam;
+in
+{
+  options = {
+    dadada.steam = {
+      enable = mkEnableOption "Enable Steam config";
+    };
+  };
+  config = mkIf cfg.enable {
+    nixpkgs.config.allowUnfree = true;
+
+    hardware.opengl = {
+      enable = true;
+      driSupport32Bit = true;
+      extraPackages32 = with pkgs.pkgsi686Linux; [ libva ];
+    };
+
+    hardware.pulseaudio.support32Bit = true;
+  };
+}