_: {
  nix.settings = {
    extra-substituters = [
      "https://noctalia.cachix.org"
      "https://vicinae.cachix.org"
    ];

    extra-trusted-public-keys = [
      "noctalia.cachix.org-1:pCOR47nnMEo5thcxNDtzWpOxNFQsBRglJzxWPp3dkU4="
      "vicinae.cachix.org-1:1kDrfienkGHPYbkpNj1mWTr7Fm1+zcenzgTizIcI3oc="
    ];
  };
}