Hyperlinked identifiers are not made for identifiers from other exported modules

[ghc-mirror]

Original reporter: mmitar@

If I have multiple modules and export them in the one public module I cannot make hyperlinked identifiers between them in documentation. But this looks strange as the user sees only one module with documentation where same identifiers are linked and some are not in the same module. The problem is that internal modules cannot import other modules because of the import cycles so that those identifiers would be visible. So this cannot be easily solved in Haskell code, but as haddock supports exported modules it should take care that it searches for identifiers in the module documentation is visible and not (just) where it is defined.