{pkgs, ...}: let cb-ucm-conf = with pkgs; alsa-ucm-conf.overrideAttrs { wttsrc = fetchFromGitHub { owner = "WeirdTreeThing"; repo = "alsa-ucm-conf-cros"; rev = "a4f0ed6cf59163fb571c33a81a6b40b6f53ed57d"; hash = "sha256-H0BsRzHSEJ6XCZB/Rvb3w+uGCzr+kAvAwcHWqYEtp6w="; }; unpackPhase = '' runHook preUnpack tar xf "$src" runHook postUnpack ''; installPhase = '' runHook preInstall mkdir -p $out/share/alsa cp -r alsa-ucm*/ucm2 $out/share/alsa runHook postInstall ''; }; in { environment = { systemPackages = [pkgs.sof-firmware]; sessionVariables.ALSA_CONFIG_UCM2 = "${cb-ucm-conf}/share/alsa/ucm2"; etc = { "wireplumber/main.lua.d/51-increase-headroom.lua".text = '' rule = { matches = { { { "node.name", "matches", "alsa_output.*" }, }, }, apply_properties = { ["api.alsa.headroom"] = 4096, }, } table.insert(alsa_monitor.rules,rule) ''; }; }; system.replaceDependencies.replacements = [ { original = pkgs.alsa-ucm-conf; replacement = cb-ucm-conf; } ]; boot.extraModprobeConfig = '' options snd-intel-dspcfg dsp_driver=3 ''; services.pipewire.wireplumber.configPackages = [ (pkgs.writeTextDir "share/wireplumber/main.lua.d/51-increase-headroom.lua" '' rule = { matches = { { { "node.name", "matches", "alsa_output.*" }, }, }, apply_properties = { ["api.alsa.headroom"] = 4096, }, } table.insert(alsa_monitor.rules,rule) '') (pkgs.writeTextDir "share/wireplumber/main.lua.d/51-avs-dmic.lua" '' rule = { matches = { { { "node.nick", "equals", "Internal Microphone" }, }, }, apply_properties = { ["audio.format"] = "S16LE", }, } table.insert(alsa_monitor.rules, rule) '') ]; }