diff --git a/flake.lock b/flake.lock
index 4c9d906..5b6d7de 100644
--- a/flake.lock
+++ b/flake.lock
@@ -198,6 +198,22 @@
         "type": "github"
       }
     },
+    "nixos-hardware": {
+      "locked": {
+        "lastModified": 1708594753,
+        "narHash": "sha256-c/gH7iXS/IYH9NrFOT+aJqTq+iEBkvAkpWuUHGU3+f0=",
+        "owner": "NixOS",
+        "repo": "nixos-hardware",
+        "rev": "3f7d0bca003eac1a1a7f4659bbab9c8f8c2a0958",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "master",
+        "repo": "nixos-hardware",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1702272962,
@@ -253,6 +269,7 @@
         "disko": "disko",
         "dns": "dns",
         "microvm": "microvm",
+        "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_2",
         "nixpkgs-unstable": "nixpkgs-unstable"
       }
diff --git a/flake.nix b/flake.nix
index 6078051..f10eb34 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,6 +5,7 @@
     nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
     nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     deploy-rs.url = "github:serokell/deploy-rs";
+    nixos-hardware.url = "github:NixOS/nixos-hardware/master";
 
     disko = {
       url = "github:nix-community/disko";
@@ -28,7 +29,7 @@
   };
 
   outputs =
-    { self, nixpkgs, deploy-rs, disko, agenix, nixpkgs-unstable, dns, microvm, ... }:
+    { self, nixpkgs, deploy-rs, disko, agenix, nixpkgs-unstable, dns, microvm, nixos-hardware, ... }:
     let
       pkgs = nixpkgs.legacyPackages."x86_64-linux";
       lib = pkgs.lib;
@@ -69,7 +70,7 @@
       nixosConfigurations = mkNixosSystems (name: machine: {
         system = machine.arch;
 
-        specialArgs = { inherit machines machine dns microvm disko agenix; };
+        specialArgs = { inherit machines machine dns microvm disko agenix nixos-hardware; };
         modules = [
           ./nixos
           { networking.hostName = name; }
diff --git a/nixos/physical.nix b/nixos/physical.nix
index df1e959..13251f3 100644
--- a/nixos/physical.nix
+++ b/nixos/physical.nix
@@ -1,7 +1,8 @@
-{ pkgs, config, lib, modulesPath, microvm, disko, agenix, machines, dns, machine, ... }: {
+{ pkgs, config, lib, modulesPath, microvm, disko, agenix, machines, dns, machine, nixos-hardware, ... }: {
   imports = [
     (modulesPath + "/installer/scan/not-detected.nix")
     microvm.nixosModules.host
+    nixos-hardware.nixosModules.raspberry-pi-4
   ];
 
   config = {
@@ -14,7 +15,11 @@
       };
     };
 
-    boot.loader.grub.device = "/dev/sda";
+    # boot.loader.grub.device = "/dev/sda";
+    # boot.loader.grub.enable = true;
+    # boot.loader.grub.efiSupport = true;
+    # boot.loader.grub.efiInstallAsRemovable = true;
+    # boot.loader.grub.device = "nodev";
     # boot = {
     #   # kernelModules = [ "kvm-intel" ];
     #   kernelModules = [ ];
diff --git a/nixos/virtual/default.nix b/nixos/virtual/default.nix
index f3bf85b..ad37f90 100644
--- a/nixos/virtual/default.nix
+++ b/nixos/virtual/default.nix
@@ -74,14 +74,14 @@
     }];
 
     services.openssh = {
-      hostKeys = [{
-        path = "/etc/ssh/host_keys/ssh_host_ed25519_key";
-        type = "ed25519";
-      }];
+      # hostKeys = [{
+      #   path = "/etc/ssh/host_keys/ssh_host_ed25519_key";
+      #   type = "ed25519";
+      # }];
 
-      extraConfig = ''
-        HostKey /etc/ssh/host_keys/ssh_host_ed25519_key
-      '';
+      # extraConfig = ''
+      #   HostKey /etc/ssh/host_keys/ssh_host_ed25519_key
+      # '';
     };
 
     microvm = {