Install steam-run-free.

nix/configuration/configuration.nix

@@ -68,6 +68,7 @@
     ./roles/gnuplot
     ./roles/sops
     ./roles/gcloud
+    ./roles/steam_run_free
   ];
 
   nix.settings.experimental-features = [

nix/configuration/hosts/odo/default.nix

@@ -71,6 +71,7 @@
   me.sops.enable = true;
   me.sound.enable = true;
   me.steam.enable = true;
+  me.steam_run_free.enable = true;
   me.sway.enable = true;
   me.tekton.enable = true;
   me.terraform.enable = true;

nix/configuration/roles/steam_run_free/default.nix

@@ -0,0 +1,29 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [ ];
+
+  options.me = {
+    steam_run_free.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      example = true;
+      description = "Whether we want to install steam_run_free.";
+    };
+  };
+
+  config = lib.mkIf config.me.steam_run_free.enable (
+    lib.mkMerge [
+      {
+        environment.systemPackages = with pkgs; [
+          steam-run-free
+        ];
+      }
+    ]
+  );
+}