Use upstream nixos-m1 :D

kagami-air-m1/configuration.nix

@@ -9,8 +9,6 @@
     [
       # Include the results of the hardware scan.
       ./hardware-configuration.nix
-      # Firmware extracted manually
-      ./m1-support/firmware
       # Fonts
       ../modules/personal/fonts
       ../modules/services/swaylock.nix
@@ -22,16 +20,9 @@
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = false;
 
-  # boot.kernelBuildIsCross = true;
-  boot.kernelBuildIs16K = false;
-
-  boot.kernelPatches = [{
-    name = "enable_uinput";
-    patch = null;
-    extraConfig = ''
-      CONFIG_INPUT_UINPUT m
-    '';
-  }];
+  # Asahi kernel configuration
+  hardware.asahi.peripheralFirmwareDirectory = ./firmware;
+  hardware.asahi.use4KPages = true;
 
   networking.hostName = "kagami-air-m1"; # Define your hostname.
 

kagami-air-m1/extract_firmware.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+mkdir -p firmware && cp /boot/asahi/{all_firmware.tar.gz,kernelcache*} firmware

kagami-air-m1/m1-support/firmware/default.nix

@@ -1,18 +0,0 @@
-{ config, pkgs, lib, ... }:
-{
-  hardware.firmware = [
-    (pkgs.stdenvNoCC.mkDerivation {
-      name = "firmware";
-      buildCommand = ''
-        mkdir -p $out/lib/firmware
-        FIRMWARE='${./firmware.tar}'
-        if [ -e "$FIRMWARE" ]; then
-          tar xf "$FIRMWARE" -C $out/lib/firmware
-        else
-          # stop nixos infra from breaking when it doesn't have any firmware
-          touch $out/lib/firmware/.dummy
-        fi
-      '';
-    })
-  ];
-}