On Fri, Mar 8, 2013 at 3:01 PM, Thomas Schilling <[email protected]>wrote:
> Last time I checked GHC's AST types had some fields which you weren't > supposed to look at. Depending on what stage you're in those may be > different fields. They are initialised to error thunks, hence > automatically derived Show instances wouldn't work out of the box as > they would force those error thunks. > > As I said, it's been a while since I looked at that closely, so maybe > it was removed when the Typeable instances were moved into the GHC > codebase? > I noticed that some of those are still around. I'm mainly looking at the AST post type-checking.
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