Add lightning charge module

modules/lightning-charge.nix

@@ -0,0 +1,56 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.lightning-charge;
+in {
+  options.services.lightning-charge = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        If enabled, the lightning-charge service will be installed.
+      '';
+    };
+    clightning-datadir = mkOption {
+      type = types.string;
+      default = "/var/lib/clighting/";
+      description = ''
+        Data directory of the clightning service
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+      users.users.lightning-charge =
+        {
+          description = "lightning-charge User";
+          group = "lightning-charge";
+          extraGroups = [ "keys" ];
+      };
+      users.groups.lightning-charge = {
+        name = "lightning-charge";
+      };
+
+      systemd.services.lightning-charge =
+        { description = "Run lightning-charge";
+          wantedBy = [ "multi-user.target" ];
+          requires = [ "clightning.service" ];
+          after = [ "clightning.service" ];
+          serviceConfig =
+            {
+              EnvironmentFile = "/secrets/lightning-charge-api-token";
+              ExecStart = "${pkgs.lightning-charge.package}/bin/charged -l ${config.services.clightning.dataDir} -d ${config.services.clightning.dataDir}/lightning-charge.db";
+
+              User = "clightning";
+              Restart = "on-failure";
+              RestartSec = "10s";
+              PrivateTmp = "true";
+              ProtectSystem = "full";
+              NoNewPrivileges = "true";
+              PrivateDevices = "true";
+            };
+        };
+    };
+}

modules/nixbitcoin.nix

@@ -7,9 +7,10 @@ let
 in {
   imports =
     [
-      ./bitcoind.nix
       ./tor.nix
+      ./bitcoind.nix
       ./clightning.nix
+      ./lightning-charge.nix
     ];
 
   options.services.nixbitcoin = {
@@ -53,6 +54,8 @@ in {
     services.clightning.enable = true;
     services.clightning.bitcoin-rpcuser = config.services.bitcoind.rpcuser;
 
+    services.lightning-charge.enable = true;
+
     # nodeinfo
     systemd.services.nodeinfo = {
       description = "Get node info";