To apply 'nokinds' to building packages from Hackage, the best option would be
to follow instructions from the "Nix loves Haskell" talk by Peter Simons:
Note: cloning GHC from Github requires a special setup. See [Getting a GHC
repository from Github] [7].
http://cryp.to/nixos-meetup-3-slides.pdf
**DO NOT submit pull request directly to the github repo.**
*See the GHC team's working conventions re [how to contribute a patch to GHC](http://ghc.haskell.org/trac/ghc/wiki/WorkingConventions/FixingBugs "ghc.haskell.org/trac/ghc/wiki/WorkingConventions/FixingBug").*
..where the relevant compiler name would be "ghcNokinds".