NixOS/nixpkgs — pull request #3017 by ttuegel (2014-06-19 11:51:41+00:00)
Title: Wrap Haskell tools to find GHC packages

Several Haskell tools that use GHC are missing the environment wrapping required to find Haskell packages:
* `ghc-mod` was correctly wrapped, but not `ghc-modi`
* `haddock` was wrapped prior to 2.10, but not since then.