{ pkgs, lib, ... }:

{
  services.cron.enable = false;

  networking.dhcpcd.extraConfig = "noarp";
  system.stateVersion = "19.09";

  # low latency audio stuff
  security.pam.loginLimits = [
    { domain = "@audio"; item = "memlock"; type = "-"; value = "unlimited"; }
    { domain = "@audio"; item = "rtprio"; type = "-"; value = "99"; }
    { domain = "@audio"; item = "nofile"; type = "soft"; value = "99999"; }
    { domain = "@audio"; item = "nofile"; type = "hard"; value = "99999"; }
  ];
  environment = {
    etc = {
      "security/limits.d/91-nice.conf".text = ''
        derped           -   nice            -4
      '';
    };
    variables = {
      DSSI_PATH   = "$HOME/.dssi:$HOME/.nix-profile/lib/dssi:/run/current-system/sw/lib/dssi";
      LADSPA_PATH = "$HOME/.ladspa:$HOME/.nix-profile/lib/ladspa:/run/current-system/sw/lib/ladspa";
      LV2_PATH    = "$HOME/.lv2:$HOME/.nix-profile/lib/lv2:/run/current-system/sw/lib/lv2";
      LXVST_PATH  = "$HOME/.lxvst:$HOME/.nix-profile/lib/lxvst:/run/current-system/sw/lib/lxvst";
      VST_PATH    = "$HOME/.vst:$HOME/.nix-profile/lib/vst:/run/current-system/sw/lib/vst";
    };
  };
  services = {
    udev = {
      packages = [];
      extraRules = ''
        KERNEL=="rtc0", GROUP="audio"
        KERNEL=="hpet", GROUP="audio"
      '';
    };
  };
  boot = {
    kernelModules = [ "snd-usb-audio" "snd-aloop" "snd-seq" "snd-rawmidi" ];
    kernelParams = [ "threadirq" ];
    extraModprobeConfig = ''
      options snd-usb-audio nrpacks=1
    '';
  };
}