{
  config,
  pkgs,
  flake,
  lib,
  ...
}:
with lib; let
  psCfg = config.pub-solar;
  xdg = config.home-manager.users."${psCfg.user.name}".xdg;
in {
  pub-solar.graphical.enable = true;
  pub-solar.sway.enable = true;
  pub-solar.virtualisation.enable = true;

  hardware.cpu.amd.updateMicrocode = true;

  hardware.opengl.extraPackages = with pkgs; [
    rocm-opencl-icd
    rocm-opencl-runtime
  ];

  # Use the systemd-boot EFI boot loader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  pub-solar.paranoia.enable = true;
  pub-solar.core.hibernation.resumeDevice = "/dev/dm-0";
  pub-solar.core.hibernation.resumeOffset = 115075072;

  pub-solar.paperless.sync.masterNode = true;

  age.secrets."drone-runner-exec-config" = {
    file = "${flake.self}/secrets/drone-runner-exec-config";
    mode = "400";
    owner = psCfg.user.name;
  };

  pub-solar.docker-ci-runner = {
    enable = true;
    runnerVarsFile = config.age.secrets.drone-runner-exec-config.path;
  };

  pub-solar.paperless.scannerDefaultDevice = "hp3900:libusb:005:004";

  services.openssh.openFirewall = true;
  networking.hostName = "chocolatebar";
  networking.firewall.allowedTCPPorts =
    [443]
    ++ (
      if psCfg.sway.vnc.enable
      then [5901]
      else []
    );
  networking.firewall.allowedUDPPorts = [43050];

  environment.systemPackages = with pkgs; [
    wayvnc
    drone-docker-runner
    stdenv.cc.cc.lib
    pkgs.hplip
  ];

  age.secrets."vnc-key.pem" = {
    file = "${flake.self}/secrets/vnc-key-chocolatebar.pem";
    mode = "400";
    owner = psCfg.user.name;
  };
  age.secrets."vnc-cert.pem" = {
    file = "${flake.self}/secrets/vnc-cert-chocolatebar.pem";
    mode = "400";
    owner = psCfg.user.name;
  };
  pub-solar.sway.vnc.enable = true;

  services.printing.drivers = [
    pkgs.cups-brother-hl3140cw
  ];

  services.udev.extraRules = ''
    SUBSYSTEMS=="usb", ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="209e", ATTRS{serial}=="000W0H924252", MODE="0664", GROUP="lp", SYMLINK+="usb/lp0"
  '';

  home-manager.users."${psCfg.user.name}" = {
    xdg.configFile = mkIf psCfg.sway.enable {
      "sway/config.d/10-autostart.conf".source = ./.config/sway/config.d/autostart.conf;
      "sway/config.d/10-input-defaults.conf".source = ./.config/sway/config.d/input-defaults.conf;
      "sway/config.d/10-screens.conf".source = ./.config/sway/config.d/screens.conf;
    };

    home.sessionVariables = {
      NIX_CC = "${pkgs.stdenv.cc}";
    };

    home.packages = with pkgs; [
      lmms
      audacity
    ];
  };

  musnix = {
    enable = true;
    kernel.realtime = true;
  };

  # For OpenProject development with https
  security.pki.certificates = [
    (builtins.readFile ./step-roots.pem)
  ];

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "20.09"; # Did you read the comment?
}