nix-config/configs/home-manager/mpd.nix

{
  config,
  pkgs,
  lib,
  ...
}: let
  visualizer = false;
in {
  services.mpd = {
    enable = true;
    musicDirectory = "${config.home.homeDirectory}/Music";
    network.startWhenNeeded = true;
    playlistDirectory = "${config.services.mpd.musicDirectory}/.mpd/playlists";
    extraConfig =
      ''
        restore_paused "yes"
        auto_update "yes"
        replaygain "auto"
        follow_outside_symlinks "yes"

        audio_output {
          type "pipewire"
          name "PipeWire Sound Server"
        }
      ''
      + lib.optionalString visualizer
      ''
        #for ncmpcpp visualizer
        audio_output {
            type "fifo"
            name "Visualizer feed"
            path "/tmp/mpd.fifo"
            format "44100:16:2"
        }
      '';
  };

  services.mpd-mpris.enable = true;

  programs.ncmpcpp = {
    enable = true;
    package = lib.mkIf visualizer (pkgs.ncmpcpp.override {visualizerSupport = true;});
    settings = lib.mkIf visualizer {
      visualizer_data_source = "/tmp/mpd.fifo";
      visualizer_output_name = "Visualizer feed";
      visualizer_in_stereo = "yes";
      visualizer_type = "spectrum";
      visualizer_fps = 60;
      visualizer_autoscale = "no";
      visualizer_look = "●▮";
      visualizer_color = "blue, cyan, green, yellow, magenta, red";

      ##
      ## Note: The next few visualization options apply to the spectrum visualizer.
      ##
      visualizer_spectrum_smooth_look = "yes";

      ## A value between 1 and 5 inclusive. Specifying a larger value makes the
      ## visualizer look at a larger slice of time, which results in less jumpy
      ## visualizer output.
      visualizer_spectrum_dft_size = 2;
      visualizer_spectrum_gain = 10;
      visualizer_spectrum_hz_min = 20;
      visualizer_spectrum_hz_max = 20000;
    };
  };

  home.packages = with pkgs; [
    mpc-cli
  ];
}