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39 lines
1.2 KiB
Nix
39 lines
1.2 KiB
Nix
# ALSA sound support.
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{ config, lib, pkgs, ... }:
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{
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imports = [
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(lib.mkRemovedOptionModule [ "sound" ] "The option was heavily overloaded and can be removed from most configurations.")
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];
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options.hardware.alsa.enablePersistence = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Whether to enable ALSA sound card state saving on shutdown.
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This is generally not necessary if you're using an external sound server.
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'';
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};
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config = lib.mkIf config.hardware.alsa.enablePersistence {
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# ALSA provides a udev rule for restoring volume settings.
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services.udev.packages = [ pkgs.alsa-utils ];
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systemd.services.alsa-store = {
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description = "Store Sound Card State";
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wantedBy = [ "multi-user.target" ];
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unitConfig = {
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RequiresMountsFor = "/var/lib/alsa";
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ConditionVirtualization = "!systemd-nspawn";
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};
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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ExecStartPre = "${pkgs.coreutils}/bin/mkdir -p /var/lib/alsa";
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ExecStart = "${pkgs.alsa-utils}/sbin/alsactl restore --ignore";
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ExecStop = "${pkgs.alsa-utils}/sbin/alsactl store --ignore";
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};
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};
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};
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}
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