nixbld: move services.redis into notifico/nixos-module

nixbld-etc-nixos/configuration.nix

@@ -255,11 +255,6 @@ ACTION=="add", SUBSYSTEM=="tty", \
     enable = true;
     config = "/etc/nixos/secret/notifico.py";
   };
-  # Required by notifico
-  services.redis = {
-    enable = true;
-    bind = "127.0.0.1";
-  };
 
   # This value determines the NixOS release with which your system is to be
   # compatible, in order to avoid breaking some software such as database

nixbld-etc-nixos/notifico/nixos-module.nix

@@ -22,6 +22,11 @@ in
       default = false;
       description = "Enable the commit notification service";
     };
+    enableLocalRedis = mkOption {
+      type = types.bool;
+      default = true;
+      description = "Enable a local Redis server";
+    };
     dbDir = mkOption {
       type = types.str;
       default = "/var/db/notifico";
@@ -41,6 +46,11 @@ in
     };
     users.groups.notifico = {};
 
+    services.redis = mkIf cfg.enableLocalRedis {
+      enable = true;
+      bind = "127.0.0.1";
+    };
+
     systemd.services =
       let
         User = "notifico";