Removed support for hackage references from the ref script.  If I want to reference hackage directly, I can use the callHackage function from haskellPackages.  This has the limitation that it can only use versions present in the hackage snapshot available in the current version of nixpkgs, but that's fine.  If I need a later version, I can pull it from upstream (e.g. github).
Removed support for hackage references from the ref script.  If I want
to reference hackage directly, I can use the callHackage function from
haskellPackages.  This has the limitation that it can only use versions
present in the hackage snapshot available in the current version of
nixpkgs, but that's fine.  If I need a later version, I can pull it from
upstream (e.g. github).

Rotaerk/iircc