Validate on master broken.

Andreas Klebinger klebinger.andreas at
Thu Nov 15 21:28:50 UTC 2018

Hello Devs,

it seems Simons patch "Smarter HsType pretty-print for promoted 
datacons" broke ./validate.

> I discovered that there were two copies of the PromotionFlag
>     type (a boolean, with helpfully named data cons), one in
>     IfaceType and one in HsType.  So I combined into one,
>     PromotionFlag, and moved it to BasicTypes. 

In particular haddock seems to have depended on the changed constructors.
If anyone with access and knowledge of haddock could fix  this I would 
be grateful.


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