[Nix-dev] [Hackage] How to install Hackage package, not presented in nixpkgs, locally?

[Andres Loeh]

> After rechecking found, that installing `pipes-core` package didn't install
> `categories` package, .nix file for which I added also. When I installed
> `categories`, it worked. Is it a bug? `Categories` package is mentioned in
> dependencies in pipes-core/default.nix

>From your description, I don't fully understand what went wrong, but
it sounds like something that shouldn't happen. Usually, if you
install a Haskell package via nix-env, all its Haskell dependencies
end up in the user environment, too. Do you have a sequence of
commands that demonstrates the problem, so that I can try to reproduce
it?

Cheers,
  Andres