228 lines
5.3 KiB
Nix
228 lines
5.3 KiB
Nix
{ hostRegistry, config, lib, pkgs, ... }:
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let
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streamAudioToOwncastScript = pkgs.writeScriptBin "stream-audio-to-owncast" ''
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#! ${pkgs.runtimeShell} -e
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PATH=${with pkgs; lib.makeBinPath [ coreutils pavucontrol gnome.zenity ffmpeg ]}
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MOVIE="$(zenity --file-selection --title 'Select a video to loop')"
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MOVIE_PREENCODED="/tmp/`basename $MOVIE`.mp4"
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echo
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echo Preencoding the movie. Wait a bit...
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echo
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ffmpeg -i "$MOVIE" -an -s:v 480x320 -c:v libx264 -b:v 600k -f mp4 -y "$MOVIE_PREENCODED"
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echo
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echo "Starting stream. End with <q>"
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echo
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pavucontrol &
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ffmpeg -f pulse -ac 2 -i default -stream_loop -1 -i "$MOVIE_PREENCODED" -c:a aac -c:v copy -f flv rtmp://owncast.serv.zentralwerk.org:1935/live/$(cat ${config.sops.secrets."owncast/authKey".path})
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'';
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streamAudioToOwncast = pkgs.makeDesktopItem rec {
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name = "Stream to Owncast";
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exec = "${streamAudioToOwncastScript}/bin/stream-audio-to-owncast";
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icon = "media-record";
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desktopName = name;
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terminal = true;
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};
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in
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{
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c3d2 = {
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hq.interface = "eth0";
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hq.statistics.enable = true;
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audioServer.enable = true;
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k-ot.enable = true;
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# TODO: move back to radiobert with the HW
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pi-sensors = if true then [] else [ {
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type = "dht22";
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pin = 17;
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location = "lang";
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} {
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type = "dht22";
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pin = 23;
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location = "kurz";
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} ];
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};
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sops = {
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defaultSopsFile = ./secrets.yaml;
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secrets."owncast/authKey".owner = "k-ot";
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};
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hardware.enableRedistributableFirmware = true;
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powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
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nixpkgs.config.packageOverrides = pkgs: {
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makeModulesClosure = x:
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# prevent kernel install fail due to missing modules
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pkgs.makeModulesClosure (x // { allowMissing = true; });
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};
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boot = {
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# repeat https://github.com/NixOS/nixos-hardware/blob/master/raspberry-pi/4/default.nix#L20
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# to overwrite audio module
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kernelPackages = pkgs.linuxKernel.packages.linux_rpi4;
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loader.raspberryPi = {
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enable = true;
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version = 4;
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firmwareConfig = ''
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gpu_mem=256
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dtparam=audio=on
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'';
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};
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kernelParams = lib.mkForce [
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"snd_bcm2835.enable_headphones=1"
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# don't let sd-image-aarch64.nix setup serial console as it breaks bluetooth.
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"console=tty0"
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# allow GPIO access
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"iomem=relaxed" "strict-devmem=0"
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# booting sometimes fails with an oops in the ethernet driver. reboot after 5s
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"panic=5" "oops=panic"
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# for the patch below
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"compat_uts_machine=armv6l"
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];
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tmpOnTmpfs = true;
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tmpOnTmpfsSize = "80%";
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};
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# hardware.raspberry-pi."4" = {
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# fkms-3d.enable = true;
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# };
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fileSystems."/" = {
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device = "${hostRegistry.nfsroot.ip4}:/var/lib/nfsroot/dacbert";
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fsType = "nfs";
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options = [ "nfsvers=3" "proto=tcp" "nolock" "hard" "async" "rw" ];
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};
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networking = {
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domain = "hq.c3d2.de";
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hostName = "dacbert"; # Define your hostname.
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useDHCP = false;
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interfaces.eth0.useDHCP = true;
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firewall.enable = false;
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};
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nix = {
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daemonCPUSchedPolicy = "idle";
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daemonIOSchedClass = "idle";
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settings = {
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builders-use-substitutes = true;
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cores = 4;
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extra-platforms = "armv6l-linux";
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max-jobs = 1;
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system-features = [];
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trusted-users = [ "client" ];
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};
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};
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# kernel 32bit personality patch from Ubuntu
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boot.kernelPatches = [
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rec {
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name = "compat_uts_machine";
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patch = pkgs.fetchpatch {
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inherit name;
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url = "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy/patch/?id=c1da50fa6eddad313360249cadcd4905ac9f82ea";
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sha256 = "sha256-mpq4YLhobWGs+TRKjIjoe5uDiYLVlimqWUCBGFH/zzU=";
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};
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}
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];
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environment.systemPackages = with pkgs; [
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libraspberrypi
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raspberrypi-eeprom
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vim
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wget
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libva-utils
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mpv
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vlc
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ffmpeg
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yt-dlp
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ncpamixer
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pulseaudio # required for pactl
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chromium
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firefox
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pavucontrol
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glxinfo
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# tracer-game
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bevy_julia
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bevy_mandelbrot
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allcolors
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streamAudioToOwncast
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];
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security.sudo = {
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enable = true;
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wheelNeedsPassword = false;
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};
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console.keyMap = "de";
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services = {
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# Do not log to flash:
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journald.extraConfig = ''
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Storage=volatile
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'';
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openssh = {
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enable = true;
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};
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xserver = {
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enable = true;
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layout = "de";
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xkbOptions = "eurosign:e";
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};
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};
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services.xserver = {
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desktopManager = {
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gnome.enable = true;
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};
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displayManager = {
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gdm = {
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enable = true;
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wayland = true;
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};
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autoLogin = {
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enable = true;
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user = "k-ot";
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};
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defaultSession = "gnome";
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};
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};
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systemd = {
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services.nix-daemon.serviceConfig = {
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LimitNOFILE = lib.mkForce 8192;
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CPUWeight = 5;
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MemoryHigh = "4G";
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MemoryMax = "6G";
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MemorySwapMax = "0";
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};
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# replaced by gnome-sharing
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# user.services.wayvnc = {
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# description = "Wayland VNC server";
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# wantedBy = [ "graphical-session.target" ];
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# partOf = [ "graphical-session.target" ];
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# serviceConfig = {
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# ExecStart = ''
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# ${pkgs.wayvnc}/bin/wayvnc 0.0.0.0
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# '';
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# RestartSec = 3;
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# Restart = "always";
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# };
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# };
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};
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system.stateVersion = "21.05"; # Did you read the comment?
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}
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