Here's my final proposal. If everything is fine, I'll write the docs and submit the patch. New options: ** configure --with-hscolour=PATH give the path to hscolour --hscolour-args=ARGS give the args to hscolour ** haddock --executables Run Haddock for Executables targets --hscolour[=PATH] Also run hscolour (using PATH as the stylesheet, if any) ** hscolour --executables Run hscolour for Executables targets --css=PATH Use a cascading style sheet The --executables flag makes the doc-generating process to run for all stanzas in the .cabal file, i.e. for generating docs for "executable" pakages (Current patch also fixes related bug #102). Note the --css flag to hscolour. This is very much needed: hscolour expects the CSS file to be copied in the right directory, so either Cabal or the user has to copy the CSS file. Very often, if not always, you want to pass this flag to ./Setup hscolour, so that Cabal does it for you. Related to the above, ./Setup haddock --hscolour can take the PATH to the CSS file. I'm not particulary happy about this, because it feels a bit ad-hoc w.r.t. having a --with-hscolour-flags=[--css=...] , but the latter seemed overkill to me. Zun.