Hi Magnus,
Does the cabal file for Tagsoup require a version of Cabal newer than 1.1.6? In case it does it doesn't say so. I suspect this is the cause of the rather cryptic error message: "setup: tagsoup.cabal:20: 'Executable' stanza starting with field 'ghc-options'".
The version in the darcs repo has a Cabal-Version field, asking for 1.2 or above. I'll try and make a new release with this change included in the next week.
I also noticed that the Haddock-umentation on Neil's side is for version 0.1, while Hackage has version 0.4. I was rather confused by that at first, since the module names had changed :)
Woops. I had linked directly to the haddock of the central module, rather than the haddock index. I will fix this later today. Thanks Neil