try systemd-boot

flake.nix

@@ -94,6 +94,7 @@
         "ray" = mkSystem "x86_64-linux" nixpkgs ./machines/ray/configuration.nix;
         # "nat" = mkSystem "aarch64-linux" nixpkgs ./machines/nat/configuration.nix;
         "ponyo" = mkSystem "x86_64-linux" nixpkgs ./machines/ponyo/configuration.nix;
+        "phil" = mkSystem "aarch64-linux" nixpkgs ./machines/phil/configuration.nix;
         "router" = mkSystem "x86_64-linux" nixpkgs ./machines/router/configuration.nix;
         "s0" = mkSystem "x86_64-linux" nixpkgs ./machines/storage/s0/configuration.nix;
       };

machines/phil/configuration.nix

@@ -0,0 +1,9 @@
+{ config, pkgs, lib, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  networking.hostName = "phil";
+}

machines/phil/hardware-configuration.nix

@@ -0,0 +1,42 @@
+# 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 + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.loader.systemd-boot.enable = true;
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" ];
+  boot.initrd.kernelModules = [ "dm-snapshot" ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  boot.initrd.luks.devices."enc-pv" = {
+    device = "/dev/disk/by-uuid/9f1727c7-1e95-47b9-9807-8f38531eed47";
+    allowDiscards = true;
+  };
+
+  fileSystems."/" =
+    {
+      device = "/dev/mapper/vg-root";
+      fsType = "btrfs";
+    };
+
+  fileSystems."/boot" =
+    {
+      device = "/dev/disk/by-uuid/EC6B-53AA";
+      fsType = "vfat";
+    };
+
+  swapDevices =
+    [{ device = "/dev/disk/by-uuid/b916094f-cf2a-4be7-b8f1-674ba6473061"; }];
+
+  networking.interfaces.enp0s6.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
+}