Revert "Disables jack, uses plain alsa."

This reverts commit f41af3f7e6.

asound.conf

@@ -1,43 +0,0 @@
-pcm.multi {
-	type route;
-	slave.pcm {
-		type multi;
-		slaves.a.pcm "output";
-		slaves.b.pcm "loopin";
-		slaves.a.channels 2;
-		slaves.b.channels 2;
-		bindings.0.slave a;
-		bindings.0.channel 0;
-		bindings.1.slave a;
-		bindings.1.channel 1;
-		bindings.2.slave b;
-		bindings.2.channel 0;
-		bindings.3.slave b;
-		bindings.3.channel 1;
-	}
-
-	ttable.0.0 1;
-	ttable.1.1 1;
-	ttable.0.2 1;
-	ttable.1.3 1;
-}
-
-pcm.!default {
-	type plug
-	slave.pcm "multi"
-}
-
-pcm.output {
-	type hw
-	card 0
-}
-
-pcm.loopin {
-	type plug
-	slave.pcm "hw:Loopback,0,0"
-}
-
-pcm.loopout {
-	type plug
-	slave.pcm "hw:Loopback,1,0"
-}

configuration.nix

@@ -14,7 +14,8 @@
   hardware.opengl.enable = true;
 
   sound.enable = true;
-  sound.extraConfig = (builtins.readFile ./asound.conf);
+  services.jack.jackd.enable = true;
+  services.jack.alsa.enable = true;
 
   # Includes packages needed for startx
   services.xserver = {
@@ -36,7 +37,7 @@
       geekygay = {
         shell = pkgs.fish;
         isNormalUser = true;
-        extraGroups = [ "wheel" "dialout" "audio" ];
+        extraGroups = [ "wheel" "dialout" "jackaudio" ];
         password = "";
         openssh.authorizedKeys.keyFiles = [
           ./authorized_keys
@@ -45,7 +46,7 @@
       # Unprivledged user for running the application.
       appuser = {
         isNormalUser = true;
-        extraGroups = [ "audio" ];
+        extraGroups = [ "jackaudio" ];
         password = "";
         packages = with pkgs; [
           puredata websocat