On Mon, Oct 30, 2006 at 01:24:58PM +1300, Daniel McAllansmith wrote:
I'm trying to derive some instances using DrIFT, but it will only work for me when I'm deriving for types in the current file or in the prelude.
Since DrIFT can only understand haskell source code, it can't derive instances for anything you don't have the original source to. such as things in the pre-compiled libraries that come with ghc. you will likely have to write out those instances by hand. Another possibility is that you could replicate just the data declarations by hand, and use DrIFT -r to just spit out the derivations and put those in a file on their own. a long time ago DrIFT used to be able to read ghc 'hi' files, but that has not worked in a while, it is possible not all the documentation has been updated to reflect that. John -- John Meacham - ⑆repetae.net⑆john⑈