stockholm/makefu/2configs/audio/jack-on-pulse.nix

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{ config, pkgs, ... }:
let
pulse = pkgs.pulseaudioFull;
user = config.makefu.gui.user;
wait_time = 30;
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in
{
sound.enable = true;
hardware.pulseaudio = {
enable = true;
package = pulse;
};
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environment.systemPackages = with pkgs; [
jack2Full
jack_capture
];
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# from http://anderspapitto.com/posts/2015-11-26-overtone-on-nixos-with-jack-and-pulseaudio.html
systemd.user.services = {
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jackdbus = {
description = "Runs jack, and points pulseaudio at it";
serviceConfig = {
Type = "oneshot";
ExecStart = pkgs.writeScript "start_jack.sh" ''
#! ${pkgs.bash}/bin/bash
. ${config.system.build.setEnvironment}
# TODO: correctly wait for pulseaudio, cannot use pulseaudio.service
sleep ${toString wait_time} # wait for the gui to load
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${pkgs.jack2Full}/bin/jack_control start
sleep 3 # give some time for sources/sinks to be created
${pulse}/bin/pacmd set-default-sink jack_out
${pulse}/bin/pacmd set-default-source jack_in
'';
ExecStop = pkgs.writeScript "stop_jack.sh" ''
#! ${pkgs.bash}/bin/bash
. ${config.system.build.setEnvironment}
${pkgs.jack2Full}/bin/jack_control stop
'';
RemainAfterExit = true;
Restart = "always";
RestartSec = "5";
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};
after = [ "display-manager.service" "sound.target" ];
wantedBy = [ "default.target" ];
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};
};
}