NixOS/nixpkgs — pull request #2282 by jwiegley (2014-04-15 18:40:13+00:00)
Title: Change aspell configure to use $out/lib/aspell

This change is need so that the following comment will work:

```
# Note: Users should define the `ASPELL_CONF' environment variable to
# `dict-dir $HOME/.nix-profile/lib/aspell/' so that they can access
# dictionaries installed in their profile.
```

And now I have Nix's `aspell` driving spelling in my Emacs!