[Nix-dev] ghc-7.6.3 vs haskellPlatform collision

[Peter Simons]

Hi Sergey,

there is a long and detailed discussion of this issue at:

  https://github.com/NixOS/nixpkgs/commit/d64917ad17277b8e16893ee31533ec2e33446fa7

The short answer is: replace ghcWithPackages with ghcWithPackagesOld for
the time being.

I hope this helps,
Peter