# Importing Modules {#sec-importing-modules}
Sometimes NixOS modules need to be used in configuration but exist
outside of Nixpkgs. These modules can be imported:
```nix
{
config,
lib,
pkgs,
...
}:
{
imports = [
# Use a locally-available module definition in
# ./example-module/default.nix
./example-module
];
services.exampleModule.enable = true;
}
```