nixos-modules/microvm/virtiofsd/default: set socket group to hardcoded "kvm"

Author: astro

nixos-modules/microvm/virtiofsd/default.nix

@@ -11,6 +11,9 @@ let
   supervisord = lib.getExe' supervisor "supervisord";
   supervisorctl = lib.getExe' supervisor "supervisorctl";
 
+  # TODO: don't hardcode
+  group = "kvm";
+
 in
 {
   microvm.binScripts = lib.mkIf requiresVirtiofsd {
@@ -42,7 +45,7 @@ in
               fi
               exec ${lib.getExe pkgs.virtiofsd} \
                 --socket-path=${lib.escapeShellArg socket} \
-                --socket-group=$(id -gn) \
+                --socket-group=${group} \
                 --shared-dir=${lib.escapeShellArg source} \
                 $OPT_RLIMIT \
                 --thread-pool-size ${toString config.microvm.virtiofsd.threadPoolSize} \