The manual mentions that this should work for using a local repo:

```
  programs.home-manager.enable = true;
  # Use a local clone of the repo.
  programs.home-manager.path = "/home/theduke/dev/github.com/rycee/home-manager";
```

This is not working form me though, even after doing a `home-manager switch` with the new config. 
It still won't use the local definitions.

`home-manager -I home=manager=/home/....` does work though