nix-config/hosts/pulsebert/default.nix

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

let
  octoprintPort = 8080;
in {
  imports = [ # Include the results of the hardware scan.
    ./hardware-configuration.nix
  ];

  boot = {
    loader = {
      grub.enable = false;
      generic-extlinux-compatible.enable = false;
      raspberryPi = {
        enable = true;
        version = 4;
        uboot.enable = false;
      };
    };
    #kernelPackages = pkgs.linuxPackages_rpi4;
    kernelPackages = pkgs.linuxPackages_latest;

    tmpOnTmpfs = true;
  };

  c3d2 = {
    isInHq = true;
    mapHqHosts = true;
    hq.interface = "eth0";
  };

  nix = {
    buildCores = 4;
    maxJobs = 4;
  };

  networking = {
    hostName = "pulsebert"; # Define your hostname.

  # The global useDHCP flag is deprecated, therefore explicitly set to false here.
  # Per-interface useDHCP will be mandatory in the future, so this generated config
  # replicates the default behaviour.
    useDHCP = false;
    interfaces.eth0.useDHCP = true;
    interfaces.wlan0.useDHCP = true;
    firewall.enable = false;
  };

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    git
    htop
    libraspberrypi
    mpd
    mpv
    ncmpcpp
    ncpamixer
    vim
    wget
  ];

  programs.tmux.enable = true;

  # Do not log to flash:
  services.journald.extraConfig = ''
    Storage=volatile
  '';

  # Enable the OpenSSH daemon.
  services.openssh = {
    enable = true;
    permitRootLogin = "yes";
  };
  security.sudo = {
    enable = true;
    wheelNeedsPassword = false;
  };

  users.users.k-ot = {
    isNormalUser = true;
    extraGroups = [ "wheel" "audio" ];
  };

  # Enable sound.
  sound.enable = true;
  hardware.bluetooth = {
    enable = true;
    settings = {
      Policy.AutoEnable = true;
      General = {
        Enable = "Source,Sink,Media,Socket";
        #DiscoverableTimeout = 0;
        #Discoverable = true;
      };
    };
  };
  hardware.pulseaudio = {
    enable = true;
    systemWide = true;
    tcp.enable = true;
    tcp.anonymousClients.allowedIpRanges = [
      "127.0.0.0/8"
      "::1/128"
      "fd23:42:c3d2:500::/56"
      "172.22.99.0/24"
      "172.20.72.0/21"
      "2a00:8180:2c00:200::/56"
    ];
    zeroconf.publish.enable = true;
    package = pkgs.pulseaudioFull;
    extraModules = [ pkgs.pulseaudio-modules-bt ];
  };

  # tell Avahi to publish CUPS and PulseAudio
  services.avahi = {
    enable = true;
    publish = {
      enable = true;
      addresses = true;
      userServices = true;
    };
  };

  security.acme = {
    acceptTerms = true;
    email = "mail@c3d2.de";
  };

  services.dhcpd4 = {
    enable = true;
    interfaces = [ config.c3d2.hq.interface ];
    authoritative = false;
    # the leases are defined in the secrets module imported
    # at the top-level of this flake
  };

  services.nginx = {
    enable = true;
    #recommendedGzipSettings = true;
    recommendedProxySettings = true;
    virtualHosts = {
      "drkkr.hq.c3d2.de" = {
        default = true;
        enableACME = true;
        forceSSL = true;
        locations."/" = {
          proxyPass = "http://127.0.0.1:${toString octoprintPort}";
          proxyWebsockets = true;
          extraConfig = ''
            proxy_set_header X-Scheme $scheme;
            proxy_set_header Accept-Encoding identity;
            client_max_body_size 2000M;
          '';
        };
        locations."/cam/stream" = {
          proxyPass = "http://localhost:3020/?action=stream";
          extraConfig = "proxy_pass_request_headers off;";
        };
        locations."/cam/capture" = {
          proxyPass = "http://localhost:3020/?action=snapshot";
          extraConfig = "proxy_pass_request_headers off;";
        };
      };
    };
  };
  services.octoprint = rec {
    enable = true;
    port = octoprintPort;
    extraConfig.webcam = {
      snapshot = "http://localhost:3020?action=snapshot";
      stream = "https://drkkr.hq.c3d2.de/cam/stream";
    };
    # plugins = let
    #   python = pkgs.octoprint.python;

    #   octoprint-filament-sensor-universal = python.pkgs.buildPythonPackage rec {
    #     pname = "OctoPrint-Filament-Sensor-Universal";
    #     version = "1.0.0";

    #     src = pkgs.fetchFromGitHub {
    #       owner = "lopsided98";
    #       repo = pname;
    #       rev = "8a72696867a9a008c5a79b49a9b029a4fc426720";
    #       sha256 = "1a7lzmjbwx47qhrkjp3hggiwnx172x4axcz0labm9by17zxlsimr";
    #     };

    #     propagatedBuildInputs = [ pkgs.octoprint python.pkgs.libgpiod ];
    #   };
    # #in p: [ octoprint-filament-sensor-universal ];
    # in p: [];
  };

  # Allow access to printer serial port and GPIO
  users.users.${config.services.octoprint.user}.extraGroups = [ "dialout" "gpio" ];

  services.mjpg-streamer = {
    enable = true;
    inputPlugin = "input_uvc.so -d /dev/v4l/by-id/usb-046d_0817_4B7115A0-video-index0 -r 640x480 -f 30 -pl 50hz -ex auto";
    outputPlugin = "output_http.so -p 3020";
  };

  # Allow gpio group to access GPIO devices
  users.groups.gpio = { };
  services.udev.extraRules = ''
    KERNEL=="gpiochip*", GROUP="gpio", MODE="0660"
  '';

  # 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?
}