# 13-overlay

This example shows a small flake overlay.

It includes:

- `overlays.default`,
- one package added by the overlay,
- a package output that imports `nixpkgs` with that overlay, and
- a check run by `nix flake check`.

Useful commands:

```bash
nix build
./result/bin/hello-overlay

nix run
nix flake check
nix flake show
```