nixos-dotfiles/user/configs/cava/default.nix

{ pkgs, lib, ... }:
{
  home.packages = [ pkgs.cava ];

  xdg.configFile."cava/config".text = lib.generators.toINI { } {
    general = {
      bars = "0";
      bar_width = "2";
    };

    input = {
      method = "fifo";
      source = "/tmp/mpd.fifo";
      sample_rate = "44100";
      sample_bits = "16";
    };
  };
}