{ 
  config,
  lib,
  pkgs,
  ...
}:
let
  hostName = "music-bedroom";
  snapserverHost = "snapcast.cloonar.com";
in
{
  nixpkgs.crossSystem.system = "aarch64-linux";
  imports = [
    <nixpkgs/nixos/modules/installer/sd-card/sd-image-aarch64.nix>
    <nixos-hardware/raspberry-pi/4>
  ];

  networking.hostName = hostName;
  networking.wireless = {
    enable = true;
    networks = {
      "Cloonar-Multimedia" = {
        hidden = true;
        psk = "";
      };
    };
  };

  boot = {
    # loader.grub.enable = false;
    # loader.raspberryPi.enable = true;
    # loader.raspberryPi.version = 3;
    loader.raspberryPi.firmwareConfig = ''
      dtparam=audio=on
    '';
  };

  hardware.deviceTree.filter = "bcm2710-rpi-zero-2-w.dtb";
  hardware.deviceTree = {
    enable = true;
    overlays = [
      {
        name = "hifiberry-dacplus";
        dtsText = ''
          /dts-v1/;
          /plugin/;

          / {
            compatible = "brcm,bcm2710,bcm2837";

            fragment@0 {
              target-path = "/";
              __overlay__ {
                dacpro_osc: dacpro_osc {
                  compatible = "hifiberry,dacpro-clk";
                  #clock-cells = <0>;
                };
              };
            };

            fragment@1 {
              target = <&i2s>;
              __overlay__ {
                status = "okay";
              };
            };

            fragment@2 {
              target = <&i2c1>;
              __overlay__ {
                #address-cells = <1>;
                #size-cells = <0>;
                status = "okay";

                pcm5122@4d {
                  #sound-dai-cells = <0>;
                  compatible = "ti,pcm5122";
                  reg = <0x4d>;
                  clocks = <&dacpro_osc>;
                  AVDD-supply = <&vdd_3v3_reg>;
                  DVDD-supply = <&vdd_3v3_reg>;
                  CPVDD-supply = <&vdd_3v3_reg>;
                  status = "okay";
                };
                hpamp: hpamp@60 {
                  compatible = "ti,tpa6130a2";
                  reg = <0x60>;
                  status = "disabled";
                };
              };
            };

            fragment@3 {
              target = <&sound>;
              hifiberry_dacplus: __overlay__ {
                compatible = "hifiberry,hifiberry-dacplus";
                i2s-controller = <&i2s>;
                status = "okay";
              };
            };

            __overrides__ {
              24db_digital_gain =
                <&hifiberry_dacplus>,"hifiberry,24db_digital_gain?";
              slave = <&hifiberry_dacplus>,"hifiberry-dacplus,slave?";
              leds_off = <&hifiberry_dacplus>,"hifiberry-dacplus,leds_off?";
            };
          };
        '';
      }
    ];
  };

  sound.enable = true;

  systemd.services.snapclient = {
    description = "Snapcast client";
    wantedBy = ["multi-user.target"];
    wants = ["network-online.target"];
    after = ["network-online.target"];

    serviceConfig = {
      Type = "forking";
      ExecStart = "${pkgs.snapcast}/bin/snapclient --daemon --hostID ${config.networking.hostName} -h ${snapserverHost} --player alsa";
      PIDFile = "/run/snapclient/pid";
      Restart = "on-failure";
      RestartSec = "5s";
      DynamicUser = true;
      SupplementaryGroups = "audio";
      RuntimeDirectory = "snapclient";
    };
  };

  services.openssh.enable = true;
  users = {
	  mutableUsers = false;
    users.root = {
      hashedPassword = lib.mkForce "$6$7IKExnDde920x.YH$ggegnnKJYdmg1Wt33fxuPpM.MmIaX32LXVyjL8ed7ohT385lKotFGzRpitncQ3pd9Lci1QCFGRn2tVJGxkFAm0";
      openssh.authorizedKeys.keys = [
        "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDN/2SAFm50kraB1fepAizox/QRXxB7WbqVbH+5OPalDT47VIJGNKOKhixQoqhABHxEoLxdf/C83wxlCVlPV9poLfDgVkA3Lyt5r3tSFQ6QjjOJAgchWamMsxxyGBedhKvhiEzcr/Lxytnoz3kjDG8fqQJwEpdqMmJoMUfyL2Rqp16u+FQ7d5aJtwO8EUqovhMaNO7rggjPpV/uMOg+tBxxmscliN7DLuP4EMTA/FwXVzcFNbOx3K9BdpMRAaSJt4SWcJO2cS2KHA5n/H+PQI7nz5KN3Yr/upJN5fROhi/SHvK39QOx12Pv7FCuWlc+oR68vLaoCKYhnkl3DnCfc7A7"
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIRQuPqH5fdX3KEw7DXzWEdO3AlUn1oSmtJtHB71ICoH Generated By Termius"
      ];
    };
  };

  system.stateVersion = "22.05";

  sdImage = {
    compressImage = false;
  };
}