feat(nixos): scaffold macbook host for apple silicon (aarch64-linux)

config.nix

@@ -1,4 +1,5 @@
 {
+  hakase = {
     myConfig = {
       nixos = {
         username = "kenji";
@@ -48,4 +49,43 @@
         ];
       };
     };
+  };
+
+  macbook = {
+    myConfig = {
+      nixos = {
+        username = "kenji";
+        hostname = "macbook";
+        timezone = "America/Chicago";
+      };
+      git = {
+        username = "kenji";
+        email = "kenji@macbook";
+        defaultBranch = "master";
+      };
+      terminal = {
+        default = "ghostty";
+        aliases = {
+          update = "sudo nixos-rebuild switch --flake ~/.config/nixos/#macbook";
+        };
+      };
+      hyprland = {
+        # M1 Pro/Max/Air screens are usually built-in eDP-1.
+        # HiDPI scale 2.0 is safe for Retina.
+        monitors = [
+          "eDP-1, highres, auto, 2"
+        ];
+        wallpaper = "firewatch.png";
+      };
+      firefox = {
+        bookmarks = [
+          {
+            name = "Asahi Linux";
+            url = "https://asahilinux.org/";
+          }
+        ];
+        newtabpage = [];
+      };
+    };
+  };
 }

flake.nix

@@ -52,6 +52,10 @@
       url = "github:vicinaehq/vicinae";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    apple-silicon = {
+      url = "github:tpwrules/nixos-apple-silicon";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = {
@@ -62,19 +66,18 @@
     chaotic,
     sops-nix,
     textfox,
+    apple-silicon,
     ...
   } @ inputs: let
-    config = import ./config.nix;
+    allConfig = import ./config.nix;
-    system = "x86_64-linux";
-    args =
-      {
-        inherit inputs system;
-      }
-      // config;
   in {
     nixosConfigurations = {
       hakase = nixpkgs.lib.nixosSystem {
-        specialArgs = args;
+        system = "x86_64-linux";
+        specialArgs = {
+          inherit inputs;
+          system = "x86_64-linux";
+        } // allConfig.hakase;
         modules = [
           home-manager.nixosModules.home-manager
           sops-nix.nixosModules.sops
@@ -82,6 +85,20 @@
           ./hosts/hakase/configuration.nix
         ];
       };
+
+      macbook = nixpkgs.lib.nixosSystem {
+        system = "aarch64-linux";
+        specialArgs = {
+          inherit inputs;
+          system = "aarch64-linux";
+        } // allConfig.macbook;
+        modules = [
+          home-manager.nixosModules.home-manager
+          sops-nix.nixosModules.sops
+          apple-silicon.nixosModules.apple-silicon-support
+          ./hosts/macbook/configuration.nix
+        ];
+      };
     };
   };
 }

hosts/hakase/configuration.nix

@@ -8,5 +8,6 @@
     ../../modules/nixos/default.nix
     ../../modules/nixos/hyprland.nix
     ../../modules/nixos/gaming.nix
+    ../../modules/nixos/amd.nix
   ];
 }

hosts/macbook/configuration.nix

@@ -0,0 +1,24 @@
+{
+  pkgs,
+  myConfig,
+  ...
+}: {
+  imports = [
+    ./hardware-configuration.nix
+    ../../modules/nixos/default.nix
+    ../../modules/nixos/hyprland.nix
+    # No gaming.nix (Steam is x86 only)
+    # No amd.nix
+  ];
+
+  # Apple Silicon specific hardware tweaks
+  hardware.asahi = {
+    # peripheralFirmwareDirectory = ./firmware; # If you have extracted firmware
+    useExperimentalGPUDriver = true;
+    experimentalGPUInstallMode = "replace";
+  };
+  
+  # Bootloader for Asahi is usually systemd-boot or grub, but asahi-module handles m1n1
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = false; # Asahi often prefers this false to avoid bricking nvram
+}

hosts/macbook/hardware-configuration.nix

@@ -0,0 +1,30 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "usb_storage" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/00000000-0000-0000-0000-000000000000";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/0000-0000";
+      fsType = "vfat";
+    };
+
+  swapDevices = [ ];
+
+  networking.useDHCP = lib.mkDefault true;
+  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
+}

modules/nixos/default.nix

@@ -1,6 +1,5 @@
 {pkgs, ...}: {
   imports = [
-    ./amd.nix
     ./backlight.nix
     ./boot.nix
     ./fonts.nix