[Nix-dev] Re: Building an old GHC for a new Cabal...

[Jason Dusek]

  Oh, I figured it out. You can make `nix-env' spit out the
  attribute names for packages:

    nix-env -qa --attr-path '*' | egrep cabal

  So I was able to install it like this:

    nix-env --install -A
nixpkgs_unstable.haskellPackages_ghc6122.cabalInstall080

  The "package within a package" is a concept unfamiliar to
  me.

--
Jason Dusek
Linux User #510144 | http://counter.li.org/