Consolidated and moved modules/{nixos,darwin} to modules/system

modules/system/common/hercules.nix

@@ -0,0 +1,40 @@
+{isLinux}: {
+  config,
+  pkgs,
+  lib,
+  ...
+}: let
+  options = {
+    common.hercules.enable = lib.mkEnableOption "Enables hercules-ci-agent with my configuration";
+  };
+
+  herculesUser =
+    if isLinux
+    then config.systemd.services.hercules-ci-agent.serviceConfig.User
+    else config.launchd.daemons.hercules-ci-agent.serviceConfig.UserName;
+in {
+  _file = ./hercules.nix;
+
+  inherit options;
+
+  config = lib.mkIf config.common.hercules.enable {
+    age.secrets.hercules-token = {
+      file = ../../../secrets/hercules-token.age;
+      owner = herculesUser;
+    };
+    age.secrets.hercules-cache = {
+      file = ../../../secrets/hercules-cache.age;
+      owner = herculesUser;
+    };
+
+    services.hercules-ci-agent = {
+      enable = true;
+      settings = {
+        clusterJoinTokenPath = config.age.secrets.hercules-token.path;
+        concurrentTasks = lib.mkDefault 4;
+        binaryCachesPath = config.age.secrets.hercules-cache.path;
+        secretsJsonPath = pkgs.writeText "secrets.json" "{}";
+      };
+    };
+  };
+}