quietfanatic/neskell — pull request #1 by dfornika (2014-12-23 15:50:17+00:00)
Title: Added EmptyDataDecls Language Extension

I was getting the following error while building the `Assembler` module:

lib/Assembler.hs:167:1:
‘Unknown’ has no constructors (EmptyDataDecls permits this)
In the data declaration for ‘Unknown’

So I added `EmptyDataDecls` to the LANGUAGE pragma.