{ lib, ... }:
{
  options = with lib; {
    userinfo = {
      fullName = mkOption {
        type = types.str;
        example = "Someone Someonesson";
      };
      email = mkOption {
        type = types.str;
        example = "some@email.com";
      };
      sshPublicKeys = mkOption {
        type = types.attrsOf types.str;
        default = { };
        example = {
          yubikey-keychain = "sk-ssh-ed25519@openssh.com AAAAC3NzaC1lZDI1NTE5...";
          yubikey-backup = "sk-ssh-ed25519@openssh.com AAAAC3NzaC1lZDI1NTE5...";
          yubikey-nano = "sk-ssh-ed25519@openssh.com AAAAC3NzaC1lZDI1NTE5...";
        };
        description = "SSH public keys tagged by their source/location";
      };
    };
  };
}