Am Mittwoch 03 Februar 2010 01:19:49 schrieb Mark Wong-VanHaren:
Hi, Daniel-
Many thanks for your help. Your instructions were very clear and worked perfectly.
The only snag I encountered was a separate problem I had created for myself, which I'll mention here in case it may help someone else...
I (thought I) wanted to uninstall TagSoup 0.8. (I didn't really need to.) Cabal doesn't provide an "uninstall" command, so I naively attempted to do it "manually" -- that is, to simply rm TagSoup-0.8-related files in my installation.
This confused Cabal, which still "believed" (by virtue of config settings somewhere, presumably)
Cabal asks ghc-pkg what is installed, it doesn't keep a separate database.
that TagSoup was still installed. So cabal failed to find the actual files needed and complained.
Rather than manually rm-ing things, the proper solution (I believe -- at least it worked for me) was to use "ghc-pkg unregister tagsoup".
Right. First unregister the packages. Then you can delete the files if you want to.
Anyway, thanks again for your help, Daniel. Cheers, -Mark