feat: Added vagrant module.

flake.lock

@@ -0,0 +1,25 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1661799568,
+        "narHash": "sha256-P3xXCyYfd6WzVC3anpb5ZvUeZ6vMttcs05OWGWvgc+E=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c3e4dc4f6d23c7e41dda5ce98956c75c7779e2fa",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,7 @@
+{
+  description = "A very basic flake";
+
+  outputs = { self, nixpkgs }: {
+    nixosModules.vagrant = { ... }: { imports = [ ./nixosModules/vagrant.nix ]; };
+  };
+}

nixosModules/vagrant.nix

@@ -0,0 +1,25 @@
+{ config, ... }: {
+  config = {
+    virtualisation.virtualbox.guest.enable = true;
+
+    # Mount a VirtualBox shared folder.
+    fileSystems."/vagrant" = {
+      fsType = "vboxsf";
+      device = "vagrant";
+      options = [ "rw,uid=1001,gid=60,_netdev" ]; # mount as vagrant:nginx
+    };
+
+    users.users.root.password = "vagrant";
+    users.users."vagrant" = {
+      isNormalUser = true;
+      password = "vagrant";
+      extraGroups = [
+        "nginx"
+        "wheel"
+        # Allow mounting of shared folders.
+        "vboxsf"
+      ];
+    };
+
+    services.openssh.enable = true;
+  }