Hello. I have some trouble with HDBC-mysql package (http://hackage.haskell.org/package/HDBC-mysql). 
It depends on base (<4), but in GHC 7 - base 4.3.1. 
I download a HDBC-mysql package and change dependence in .cabal file to base (<5). It works fine. 
But I want to build another package that depend on HDBC-mysql and cabal check dependencies from the hackage, where is HDBC-mysql depend on base (<4). 

What I should do?