separate grub/systemd configs.

configuration-systemd.nix

@@ -0,0 +1,51 @@
+# This is a small config that can be used to bootstrap a system with ZFS.
+{ config, lib, modulesPath, ... }:
+{
+  imports =
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  # Generate a hostId for ZFS
+  # head -c4 /dev/urandom | od -A none -t x4
+  networking.hostId = "f35c6293";
+  networking.hostName = "MiniNix";
+
+  boot = {
+    initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
+    initrd.kernelModules = [ ];
+    kernelModules = [ "kvm-intel" ];
+    extraModulePackages = [ ];
+    loader = {
+      systemd-boot.enable = true;
+      efi = {
+        canTouchEfiVariables = true;
+      };
+    };
+  };
+
+  fileSystems."/" = {
+    device = "zroot/root";
+    fsType = "zfs";
+  };
+
+  fileSystems."/nix" = {
+    device = "zroot/nix";
+    fsType = "zfs";
+  };
+
+  fileSystems."/var" = {
+    device = "zroot/var";
+    fsType = "zfs";
+  };
+
+  fileSystems."/home" = {
+    device = "zroot/home";
+    fsType = "zfs";
+  };
+
+  swapDevices = [ ];
+
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+  system.stateVersion = "24.05";
+}

flake.nix

@@ -14,11 +14,20 @@
 
   outputs = { self, nixpkgs, disko, ... }@inputs: {
     nixosConfigurations = {
-      "mini-x86" = nixpkgs.lib.nixosSystem {
+      "mini-x86-grub" = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         specialArgs = { inherit inputs; };
         modules = [
-          ./configuration.nix
+          ./configuration-grub.nix
+          disko.nixosModules.disko
+          (import ./disko-nixos.nix { disks = [ "/dev/nvme0n1" ]; })
+        ];
+      };
+      "mini-x86-systemd" = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        specialArgs = { inherit inputs; };
+        modules = [
+          ./configuration-systemd.nix
           disko.nixosModules.disko
           (import ./disko-nixos.nix { disks = [ "/dev/nvme0n1" ]; })
         ];