[Nix-dev] haskellng ghc 7.10 attribute name

[Carlo Nucera]

Hi all,
I'm running nixos unstable, and, to be able to use ghc-mod with the
new cabal 1.22 I decided to switch to ghc 7.10. So, I made the
transition to haskell ng, and changed the attribute names to not need
the old naming conventions.

So, I'm trying to change this line posted by Peter
self.haskell-ng.packages.ghc763.ghcWithPackages

In an attribute path to use with nixos unstable. However, here's what
I get with my tries:
- with ghcHEAD I get:
attribute ‘haskellngPackages.ghcHEAD.ghcWithPackages’ missing
- with ghc7101 I get:
attribute ‘haskellngPackages.ghc7101.ghcWithPackages’ missing


What should I use in nixos-unstable?
Best Regards
Carlo