Add configs for installing sunshine (server) and moonlight (client).

nix/configuration/roles/moonlight/default.nix

@@ -0,0 +1,53 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [ ];
+
+  options.me = {
+    moonlight.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      example = true;
+      description = "Whether we want to install moonlight.";
+    };
+  };
+
+  config = lib.mkIf (config.me.moonlight.enable && config.me.graphical) {
+    environment.systemPackages = with pkgs; [
+      moonlight-qt
+    ];
+
+    environment.persistence."/persist" = lib.mkIf (config.me.mountPersistence) {
+      hideMounts = true;
+      users.talexander = {
+        directories = [
+          {
+            directory = ".config/Moonlight Game Streaming Project";
+            user = "talexander";
+            group = "talexander";
+            mode = "0755";
+          }
+        ];
+      };
+    };
+
+    environment.persistence."/state" = lib.mkIf (config.me.mountPersistence) {
+      hideMounts = true;
+      users.talexander = {
+        directories = [
+          {
+            directory = ".cache/Moonlight Game Streaming Project";
+            user = "talexander";
+            group = "talexander";
+            mode = "0755";
+          }
+        ];
+      };
+    };
+  };
+}