NixOS/nixpkgs — pull request #732 by errge (2013-07-08 20:16:17+00:00)
Title: Build haddock for transformers-compat

I tested this and it builds, the built docs seems to be minimal, but OK. Maybe this was needed in old times to cover for some other bugs? Nowadays, this is the only package in my quite extensive nix based ghc cabal collection that issues warnings when I do a 'ghc-pkg check'.