Move all of NixOS to nixos/ in preparation of the repository merge

nixos/doc/config-examples/closed-install-configuration.nix

@@ -0,0 +1,32 @@
+{
+  boot = {
+    loader.grub.device = "/dev/sda";
+    copyKernels = true;
+    bootMount = "(hd0,0)";
+  };
+
+  fileSystems = [
+    { mountPoint = "/";
+      device = "/dev/sda3";
+    }
+    { mountPoint = "/boot";
+      device = "/dev/sda1";
+      neededForBoot = true;
+    }
+  ];
+
+  swapDevices = [
+    { device = "/dev/sda2"; }
+  ];
+
+  services = {
+    sshd = {
+      enable = true;
+    };
+  };
+
+  fonts = {
+    enableFontConfig = false;
+  };
+
+}