nixos/.nixd.json

{
  "eval": {
    "target": {
      "args": ["-f", "default.nix"],
      "installable": "nixosConfigurations.sakotop.config.system.build.toplevel"
    },
    "depth": 0,
    "workers": 3
  },
  "options": {
    "enable": true,
    "target": {
      "args": [],
      "installable": ".#nixosConfigurations.sakotop.options"
    }
  }
}