{ config, inputs, lib, ... }: {
  imports = [
    ./nix-config.nix
    inputs.hydra.nixosModules.hydra
  ];
  sops.secrets."services/hydra/signKey" = {
    owner = "hydra-queue-runner";
    sopsFile = ../../../secrets/services/hydra.yaml;
  };
  sops.secrets."services/hydra/id_ed25519_hydra-eval" = {
    path = "/var/lib/hydra/.ssh/id_ed25519";
    owner = "hydra";
    mode = "0400";
    sopsFile = ../../../secrets/services/hydra.yaml;
  };
  sops.secrets."services/hydra/id_ed25519_hydra" = {
    owner = "hydra-queue-runner";
    sopsFile = ../../../secrets/services/hydra.yaml;
  };
  kyouma.deployment.auto-upgrade.cache = "daemon";

  services.hydra-dev = {
    enable = true;
    package = inputs.hydra.packages.${config.nixpkgs.hostPlatform.system}.hydra;
    hydraURL = "https://hydra.kyouma.net";
    listenHost = "localhost";
    notificationSender = "hydra@hydra.kyouma.net";
    minimumDiskFree = 2;
    useSubstitutes = true;
    extraConfig = ''
      server_store_uri = https://cache.kyouma.net
      binary_cache_public_uri = https://cache.kyouma.net
      evaluator_workers = 6
      evaluator_max_memory_size = 12288
      max_output_size = ${builtins.toString (24 * 1024 * 1024 * 1024)}
    '';
  };
  services.harmonia = {
    enable = true;
    signKeyPaths = lib.singleton config.sops.secrets."services/hydra/signKey".path;
    settings = {
      bind = "[::1]:5555";
    };
  };

  systemd.services.hydra-evaluator.serviceConfig = {
    MemoryHigh = "250G";
    MemoryMax = "254G";
  };

  kyouma.nginx.defaultForbidden = "hydra.kyouma.net";
  kyouma.nginx.virtualHosts = {
    "hydra.kyouma.net".locations."/".proxyPass = "http://localhost:3000";
    "cache.kyouma.net" = {
      locations."/".proxyPass = "http://[::1]:5555";
      locations."= /" = {
        return = ''200 'Public key:\n\ncache.kyouma.net:Frjwu4q1rnwE/MnSTmX9yx86GNA/z3p/oElGvucLiZg=' '';
        extraConfig = ''
          types { } default_type "text/plain; charset=utf-8";
        '';
      };
    };
  };
  security.acme.certs."hydra.kyouma.net".extraDomainNames = [ "cache.kyouma.net" ];
}