fixed typo and added test vm

modules/vm.nix

@@ -0,0 +1,41 @@
+{ config, lib, pkgs, buildVM, ... }:
+
+{
+  assertions = [
+    { assertion = buildVM; message = "this module may only be used when building a VM!"; }
+  ];
+
+  users.users.root.hashedPassword = "";
+  users.mutableUsers = false;
+
+  networking.useDHCP = lib.mkForce false;
+  networking.interfaces = lib.mkForce {
+    eth0.useDHCP = true;
+  };
+  networking.defaultGateway = lib.mkForce null;
+
+  sops.defaultSopsFile = lib.mkForce ../secrets/quitte-vm.yaml;
+  sops.age.sshKeyPaths = lib.mkForce [ ];
+  sops.gnupg.sshKeyPaths = lib.mkForce [ ];
+  sops.age.keyFile = lib.mkForce "${../keys/gpg/test.age}";
+  sops.age.generateKey = lib.mkForce false;
+
+  # don't use production endpoint for test vm, to avoid rate limiting
+  security.acme.defaults.server = "https://acme-staging-v02.api.letsencrypt.org/directory";
+
+  # Set VM disk size (in MB)
+  virtualisation.diskSize = 2048;
+
+  # Set VM ram amount (in MB)
+  virtualisation.memorySize = 2048;
+
+  virtualisation.forwardPorts = [
+    { from = "host"; host.port = 2222; guest.port = 22; }
+  ];
+  virtualisation.graphics = false;
+
+  # show systemd logs on console
+  services.journald.extraConfig = ''
+    ForwardToConsole=yes
+  '';
+}