Hi Duncan
2009/2/5 Duncan Coutts
On Thu, 2009-02-05 at 00:11 +0100, Deniz Dogan wrote:
I'm currently working on "hacking" Data.Generics for my master thesis. I'm basically trying to find out whether it can be made any faster using e.g. rewrite rules. The problem I'm having is that I need an easy way to import my own modified version of Data.Generics (currently located in the same directory as my testing program) without unregistering or hiding syb-0.1.0.0 as base seems to depend on it.
This should just work. If ./Data/Generics.hs exists in / relative to the current directory then by default that overrides the module of the same name from the syb package. There's clearly some specific problem you're hitting, can you tell us more about it?
You're right of course, it does work. I must have been so convinced it wouldn't work that I completely disregarded that GHC even told me it compiled Data.Generics and all of the other modules. That was silly! Thanks!