The Complete Computer

Listening To Music is something I do a fair lot, and I remain displeased with the clients and interfaces at my disposal. Currently, I use MPD, the Music Playing roam:Daemon which is a local server and a set of clients. On My Laptop where i have Emacs I use a few different clients for different usecases, each one well works for different uses.

nix source: :tangle ~/arroyo-nix/hm/mpd.nix
{ config, pkgs, ... }:

let mkNixGLWrapper = pkgs.lib.mkNixGLWrapper;
    cantata = (mkNixGLWrapper { name="cantata"; });
in {
  services.mpd = {
    enable = true;
    musicDirectory = "/home/rrix/Music";
    playlistDirectory = "/home/rrix/Music/playlists";
    dataDir = "/home/rrix/Music";
    network.listenAddress = "any";
    extraConfig = ''
    audio_output {
        type                    "pulse"
        name                    "My Pulse Output"
    }
    audio_output {
        type                    "fifo"
        name                    "my_fifo"
        path                    "/tmp/mpd.fifo"
        format                  "44100:16:2"
    }
  '';
  };
  services.mpdris2.enable = true;

  programs.ncmpcpp = {
    enable = true;
    settings = {
      visualizer_data_source = "/tmp/mpd.fifo";
      visualizer_output_name = "my_fifo";
      visualizer_in_stereo = "yes";
      visualizer_type = "spectrum";
      visualizer_look = "+|";
    };
    bindings = [
      { key = "j"; command = "scroll_down"; }
      { key = "k"; command = "scroll_up"; }
      { key = "J"; command = [ "select_item" "scroll_down" ]; }
      { key = "K"; command = [ "select_item" "scroll_up" ]; }
    ];
    package = pkgs.ncmpcpp.override { visualizerSupport = true; };
  };

  home.file.".config/autostart/cantata.desktop".source = "${cantata}/share/applications/cantata.desktop";
  home.packages = [ pkgs.mpc cantata ];
}

emacs-lisp source: :tangle cce/mpd.el
(use-package mingus)

Mopidy is an extensible music server written in Python. It's mostly designed to provide an easy hardware jukebox for Spotify or whatever crappy web service you want to use. I use it for Bandcamp, mainly. There is NixOS module support for it so I enable it in My NixOS configuration . I want to use it for Youtube Music but this doesn't work reliably because they're fucking cops, though...

#+ARROYO_NIXOS_MODULE: nixos/mopidy.nix

nix source: :tangle ~/arroyo-nix/nixos/mopidy.nix :noweb yes
{ pkgs, ...}:
let
  extPkgs = with pkgs; [
    mopidy-bandcamp
    mopidy-mpd
    mopidy-youtube
  ];
in {
  <<pipewire>>
  <<firewallPorts>>

  systemd.services.mopidy.wants = [ "network-online.target" ];
  services.mopidy = {
    enable = false;
    extensionPackages = extPkgs;
    dataDir = "/var/lib/mopidy";
    settings = {
      audio.output = "pulsesink server=127.0.0.1";
      bandcamp = {
        discover_tags = "8-bit, chiptune, idm, ambient, drone, experimental, dark ambient, glitch, cyberpunk,  nu-jazz, gameboy, breakcore, edm, indie, indie-folk, indie-punk, indie rock, eugene, seattle, phoenix";
          identity = builtins.readFile <org/cce/bandcamp-cookie.txt>;
      };
      youtube = {
        musicapi_cookie = builtins.readFile <org/cce/ytmusic-cookie.txt>;
        musicapi_enabled = true;
      };
      mpd = {
        enabled = true;
        port = 6601;
        hostname = "::";
      };
    };
  };
}

nix source: :noweb-ref firewallPorts
networking.firewall.allowedTCPPorts = [ 6600 6601 ];

This configures PipeWire to listen for TCP connections so that the service-user which is set up for Mopidy is able to send audio to my speakers through a PipeWire run through My NixOS user .

(output) above points Mopidy at it.

nix source: 
# Set up PipeWire to listen on TCP so that the mopidy user can send audio
services.pipewire.extraConfig.pipewire-pulse."10-enable-tcp-pulse" = {
  "context.exec" = [
    {
      "args" = "load-module module-native-protocol-tcp";
      "path" = "pactl";
    }
  ];
  "pulse.properties" = {
    "server.address" = [
      "unix:native"
      "tcp:4713"
    ];
  };
};

Here's a simple little PyPI package wrapper. This lets me play from my wishlist and discovery tags and my collection. I add stuff on my phone when I'm bored and decide whether I want to buy them later on. This is shoved in to the rixpkgs overlay.

nix source: :tangle ~/arroyo-nix/pkgs/mopidy-bandcamp.nix
{  python3Packages, mopidy, yt-dlp, lib, callPackage, ... }:

python3Packages.buildPythonApplication rec {
  pname = "mopidy-bandcamp";

  version = lib.pkgVersions.mopidy-bandcamp.version;
  src = callPackage lib.pkgVersions.mopidy-bandcamp.src {};

  propagatedBuildInputs = [
    mopidy
  ];

  pythonImportsCheck = [ "mopidy_bandcamp" ];

  # has no tests
  doCheck = false;

  meta = with lib; {
    description = "Mopidy extension for playing music from Bandcamp";
    homepage = "https://github.com/impliedchaos/mopidy-bandcamp";
    license = licenses.mit;
    maintainers = [
      {
        email = "nixpkgs@whatthefuck.computer";
        matrix = "@rrix:kickass.systems";
        github = "rrix";
        githubId = 138102;
        name = "rrix";
      }
    ];
  };
}