Move modules in programs/services subfolders

modules/system/services/syncthing/backups.nix

@@ -0,0 +1,64 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  cfg = config.custom.services.syncthing;
+
+  user = config.users.users.syncthing.name;
+in
+{
+  options.custom.services.syncthing.backups.enable = lib.mkEnableOption "";
+
+  config = lib.mkIf cfg.backups.enable {
+    assertions = [
+      {
+        assertion = cfg.isServer;
+        message = "syncthing backups can only be made on a server";
+      }
+    ];
+
+    security.polkit = {
+      enable = true;
+      extraConfig =
+        let
+          service = "syncthing.service";
+        in
+        ''
+          polkit.addRule(function(action, subject) {
+            if (action.id == "org.freedesktop.systemd1.manage-units" &&
+              action.lookup("unit") == "${service}" &&
+              subject.user == "${user}") {
+              return polkit.Result.YES;
+            }
+          });
+        '';
+    };
+
+    custom.services.resticBackup.syncthing = {
+      inherit user;
+      healthchecks.enable = true;
+
+      extraConfig = {
+        backupPrepareCommand = "${lib.getExe' pkgs.systemd "systemctl"} stop syncthing.service";
+        backupCleanupCommand = "${lib.getExe' pkgs.systemd "systemctl"} start syncthing.service";
+        paths = [ config.services.syncthing.dataDir ];
+      };
+    };
+
+    environment.systemPackages = [
+      (pkgs.writeShellApplication {
+        name = "syncthing-restore";
+        text = ''
+          sudo --user=${user} bash -c "
+            systemctl stop syncthing.service
+            restic-syncthing restore latest --target /
+            systemctl start syncthing.service
+          "
+        '';
+      })
+    ];
+  };
+}