Add muin install host

hosts/muin/hardware-configuration.nix

@@ -0,0 +1,31 @@
+# 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")
+  #   ];
+  #
+  # hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  networking.useDHCP = lib.mkForce true;
+
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
+
+  virtualisation.vmVariant = {
+    # following configuration is added only when building VM with build-vm
+    virtualisation = {
+      memorySize = 4096; # Use 2048MiB memory.
+      cores = 3;
+    };
+  };
+}