68 lines
1.3 KiB
Nix
68 lines
1.3 KiB
Nix
# ALSA sound support.
|
|
{ config, pkgs, ... }:
|
|
|
|
with pkgs.lib;
|
|
|
|
let
|
|
|
|
inherit (pkgs) alsaUtils;
|
|
|
|
soundState = "/var/lib/alsa/asound.state";
|
|
|
|
in
|
|
|
|
{
|
|
|
|
###### interface
|
|
|
|
options = {
|
|
|
|
sound = {
|
|
|
|
enable = mkOption {
|
|
default = true;
|
|
description = ''
|
|
Whether to enable ALSA sound.
|
|
'';
|
|
merge = mergeEnableOption;
|
|
};
|
|
|
|
enableOSSEmulation = mkOption {
|
|
default = true;
|
|
description = ''
|
|
Whether to enable ALSA OSS emulation (with certain cards sound mixing may not work!).
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = mkIf config.sound.enable {
|
|
|
|
environment.systemPackages = [ alsaUtils ];
|
|
|
|
# ALSA provides a udev rule for restoring volume settings.
|
|
services.udev.packages = [ alsaUtils ];
|
|
|
|
boot.kernelModules = optional config.sound.enableOSSEmulation "snd_pcm_oss";
|
|
|
|
systemd.services."alsa-store" =
|
|
{ description = "Store Sound Card State";
|
|
wantedBy = [ "multi-user.target" ];
|
|
unitConfig.RequiresMountsFor = "/var/lib/alsa";
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
RemainAfterExit = true;
|
|
ExecStart = "${pkgs.coreutils}/bin/mkdir -p /var/lib/alsa";
|
|
ExecStop = "${alsaUtils}/sbin/alsactl store --ignore";
|
|
};
|
|
};
|
|
|
|
};
|
|
|
|
}
|