Roger

{
  inputs.nixpkgs.url = "nixpkgs/nixos-23.05";

  outputs = { self, nixpkgs }:
    let rpiOverlays = [
          (final: super: {
            # Allow missing modules because the master module list is based on strings and the rpi kernel
            # is missing some
            # https://github.com/NixOS/nixpkgs/issues/154163
            makeModulesClosure = x: super.makeModulesClosure (x // { allowMissing = true; });

Roger

diff --git a/configuration.nix b/configuration.nix
index fdd9a99..9475b5c 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -22,6 +22,18 @@ let
     fi
   '';
   lib = pkgs.lib;
+
+  # the default priorities put the internal mic above headphones one