[Haskell-cafe] Tracking down where an instance comes from

[Tobias Florek]

Hi,

> instance [safe] Show (a -> b) -- Defined in ‘Text.Show.Functions’
> 
> What would be the best way to track down through which import this
> actually comes in? 

I might be late and you already found it, but my strong guess is that
it's regex-tdfa.

Cheers,
 tobias florek