DynFlags.lhs

[Ian Lynagh]

On Wed, Sep 19, 2012 at 07:28:23AM +0000, Simon Peyton-Jones wrote:
> |  > Somehow compiling DynFlags.lhs has started taking a very long time, and
> |  generates lots of code. I have not had time to investigate, but if anyone has any
> |  idea what is happening I'd be happy to know.
> |  
> |  I've added some more stuff to it recently. In particular, a large type:
> |      includes/dist-derivedconstants/header/GHCConstantsHaskellType.hs

It's mostly the Read instance, but partly the Show instance, of the
type. I've attached a simple example with just a Read instance;
compiling with
    ghc -O -c W2.hs
takes a while.


-- 
Ian Lynagh, Haskell Consultant
Well-Typed LLP, http://www.well-typed.com/
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