Move non-upstreamed NixNG modules into this repo

nixng-modules/jellyseerr.nix

@@ -0,0 +1,46 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}: let
+  cfg = config.services.jellyseerr;
+in {
+  options.services.jellyseerr = {
+    enable = lib.mkEnableOption "jellyseerr";
+    package = lib.mkPackageOption pkgs "jellyseerr" {};
+
+    port = lib.mkOption {
+      description = ''
+        The port Jellyseerr should listen on.
+      '';
+      type = lib.types.port;
+      example = 8080;
+      default = 5055;
+    };
+
+    configDir = lib.mkOption {
+      description = ''
+        The directory to save run-time configuration.
+      '';
+      type = lib.types.str;
+      example = "/jellyseerr";
+      default = "/var/lib/jellyseerr";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    init.services.jellyseerr = {
+      enabled = true;
+      script = lib.getExe cfg.package;
+    };
+
+    environment = {
+      systemPackages = [cfg.package];
+      variables = {
+        PORT = builtins.toString cfg.port;
+        CONFIG_DIRECTORY = cfg.configDir;
+      };
+    };
+  };
+}