base-4.15 on Hackage does not have source

Compare:

• https://hackage.haskell.org/package/base-4.14.0.0/docs/Data-Ord.html#t:Down
• https://hackage.haskell.org/package/base-4.15.0.0/docs/Data-Ord.html#t:Down

Former has source links, latter doesn't. This is a regression, source links are very useful.