ghc-7.6.2 breaks haddock interface...

[Simon Hengel]

Hi Joachim,

On Wed, Dec 12, 2012 at 12:20:35AM +0100, Joachim Breitner wrote:
> there really a change to the on-disk format of the .haddock files?

Yes, the on-disk format changed, hence the interface version was bumped
from 21 to 22.  But Haddock can still read files with interface version
21 (see [1]).

Cheers,
Simon

[1] https://github.com/ghc/haddock/blob/ghc-7.6/src/Haddock/InterfaceFile.hs#L81