For a cabal project, I wanted to generate haddock documentation with hyperlinks to the source code, so I did the usual:
cabal haddock --hyperlink-source
The links were generated, but upon clicking the links I find that the actual source code is not included even though the links are. The source code is supposed to be rendered via HTML. How do I generate those as well?
Currently using:
Turns out it was because hscolour was not installed. Installing it via:
cabal install hscolour
fixed the problem.
Interestingly, there was a warning for it that said
Warning: The program 'hscolour' version >=1.8 is required but it could not be found.
but it was buried inside the usual haddock output so I didn't notice it until now.