(Imported from Trac #593, reported by chevalier on 2009-09-29)
cabal install mtl --enable-library-profiling
No packages to be installed. All the requested packages are already installed.
If you want to reinstall anyway then use the --reinstall flag.
This is with cabal-install 0.6.2, library version 184.108.40.206.
(Imported comment by @dcoutts on 2009-09-29)
I think the better solution is for