nixos/pulseaudio: add pulse-access group

According to pulseaudio(1), a system wide pulseaudio instance
can only be accessed by members of the `pulse-access` group.
This name seems to be hardcoded in
pulseaudio -- I didn't find any switch to change it.
We need to define the group so users can connect to the deamon.

This commit also fixes the systemwide pulseaudio vm test:
Previously, the test user `alice`
was just a member of the `audio` group.
This blocked access to the daemon and failed the test.
The commit changes the group assignment and fixes the vm test.

1 files changed, 1 insertions, 1 deletions

diff --git a/nixos/tests/pulseaudio.nix b/nixos/tests/pulseaudio.nix
index c553527a482cf..16809228b9dd2 100644
--- a/nixos/tests/pulseaudio.nix
+++ b/nixos/tests/pulseaudio.nix
@@ -40,7 +40,7 @@ let
             environment.systemPackages = [ testers.testPlay pkgs.pavucontrol ]
               ++ lib.optional pkgs.stdenv.isx86_64 testers.testPlay32;
           } // lib.optionalAttrs systemWide {
-            users.users.alice.extraGroups = [ "audio" ];
+            users.users.alice.extraGroups = [ "pulse-access" ];
             systemd.services.pulseaudio.wantedBy = [ "multi-user.target" ];
           };