{ config, pkgs, lib, ... }:
{
  boot.loader.grub.enable = false;
  boot.loader.generic-extlinux-compatible.enable = true;

  boot.kernelPackages = pkgs.linuxPackages_latest;

  services.nixosManual.enable = false;

  nix.binaryCaches = lib.mkForce [ "http://nixos-arm.dezgeg.me/channel" ];
  nix.binaryCachePublicKeys = [ "nixos-arm.dezgeg.me-1:xBaUKS3n17BZPKeyxL4JfbTqECsT+ysbDJz29kLFRW0=%" ];
  nix.maxJobs = 3;
  nix.extraOptions = ''
    gc-keep-derivations = false
  '';

  hardware.opengl.enable = lib.mkDefault false;
  powerManagement.enable = false;

  networking.hostName = "schaf";

  fileSystems = {
    "/boot" = {
      device = "/dev/disk/by-label/NIXOS_BOOT";
      fsType = "vfat";
    };
    "/" = {
      device = "/dev/disk/by-label/NIXOS_SD";
      fsType = "ext4";
    };
    "/home" = {
      device = "/dev/disk/by-label/SCHAF_HOME";
      fsType = "ext4";
    };
    "/nix" = {
      device = "/dev/disk/by-label/NIX_SCHAF";
      fsType = "ext4";
    };
  };

  swapDevices = [ { device = "/swapfile"; size = 1024; } ];

  services.openssh.enable = true;
  services.openssh.permitRootLogin = "no";
  networking.firewall.enable = false;

  services.journald.extraConfig = "SystemMaxUse=10M";

  environment.systemPackages = with pkgs; [
    vim
    sudo
    git
  ];

  services.tor.enable = true;
  services.tor.extraConfig = ''
    HiddenServiceDir /var/lib/tor/hs
    HiddenServicePort 22 127.0.0.1:22
  '';

  users.extraUsers.lukas = {
    isNormalUser = true;
    uid = 1000;
    openssh.authorizedKeys.keys = [
      "ssh-rsa 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 git@lukasepple.de"
      ];
    shell = "${pkgs.fish}/bin/fish";
    group = "users";
    extraGroups = [ "wheel" ];
  };

  programs.fish.enable = true;

  system.stateVersion = "unstable";
}