add mysql/mariadb

etcnixos/system-mreow.nix

@@ -118,4 +118,10 @@
   # disable framework kernel module
   # https://github.com/NixOS/nixos-hardware/issues/1330
   hardware.framework.enableKmod = false;
+
+  # for database class
+  services.mysql = {
+    enable = true;
+    package = pkgs.mariadb;
+  };
 }