[Haskell-cafe] problem with editline install

[Andrew U. Frank]

i tried to install editline (because i wanted to install djinn, which depends 
on it):
with cabal install and with downloading and runghc Setup.lhs configure 
i got the same error:

checking for completion_matches... no
configure: error: editline not found, so this package cannot be built
See `config.log' for more details.


in the log i did not see anything helpful (at my level of understanding).
i could then install with synaptic because a deb package existed for ubuntu).

what did i wrong? thanks for helpful comments

andrew

ps. in this case a wiki would have been helpful. it would have been a less 
intruding form to communicate than sending an email to the developer. 
especially in the case i assume i made some error.