misleading error message from cabal when versions differ

[guest]

Using cabal, I do './Setup.hs configure', './Setup.hs build', and 'sudo ./Setup.hs install'. Unfortunately, root's $PATH pointed to a different GHC (6.7 at some point, and not 6.4.2 which I was using), which resulted in the error message:

Setup.hs: error reading ./.setup-config; run "setup configure" command?

Of course, there was nothing wrong with .setup-config, so I spent some time investigating permissions, before int-e suggested that the search path was at fault.

[igloo]

I've opened a bug for this on the Cabal trac:  http://hackage.haskell.org/trac/hackage/ticket/120