nixpkgs/nixos/modules/services/audio/squeezelite.nix

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{ config, lib, pkgs, ... }:
let
inherit (lib) mkEnableOption mkIf mkOption optionalString types;
dataDir = "/var/lib/squeezelite";
cfg = config.services.squeezelite;
pkg = if cfg.pulseAudio then pkgs.squeezelite-pulse else pkgs.squeezelite;
bin = "${pkg}/bin/${pkg.pname}";
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in
{
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###### interface
options.services.squeezelite = {
enable = mkEnableOption "Squeezelite, a software Squeezebox emulator";
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pulseAudio = mkEnableOption "pulseaudio support";
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extraArguments = mkOption {
default = "";
type = types.str;
description = ''
Additional command line arguments to pass to Squeezelite.
'';
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};
};
###### implementation
config = mkIf cfg.enable {
systemd.services.squeezelite = {
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wantedBy = [ "multi-user.target" ];
after = [ "network.target" "sound.target" ];
description = "Software Squeezebox emulator";
serviceConfig = {
DynamicUser = true;
ExecStart = "${bin} -N ${dataDir}/player-name ${cfg.extraArguments}";
StateDirectory = builtins.baseNameOf dataDir;
SupplementaryGroups = "audio";
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};
};
};
}