Haddocks for base-4.16.0.0 on Hackage contain broken source links to ghc-prim
E.g. on https://hackage.haskell.org/package/base-4.16.0.0/docs/Data-Eq.html#t:Eq, the Source link for Eq leads to https://hackage.haskell.org/package/base-4.16.0.0/ghc-prim-0.8.0/src/GHC-Classes.html#Eq.
The correct link would be https://hackage.haskell.org/package/ghc-prim-0.8.0/docs/src/GHC.Classes.html#Eq.