On Sat, Sep 01, 2007 at 11:48:34PM +0100, Claus Reinke wrote:
i just did a little experiment, with ghc-6.6.1. consider:
-- Y.hs module Main where import Data.Time main = print =<< getCurrentTime
now, consider this cabal package, the only purpose of which will be to make Y.hs compileable:
-- P.cabal Exposed-modules: Data Build-Depends: base, time
-- Data.hs (yes..) module Data(module Time) where import Data.Time as Time
I'm a bit confused; is this Data module necessary? If so, is its name important? Are you proposing a new extension?
configure, build, install, and 'ghc -package P Y.hs' seems to work.
$ ghc -package P Y.hs
Why is -package P better than -package time? Incidentally, one thing that might help is to make an empty "time" package for people with old GHCs to install (or even to make the time package appear empty to such people, with configurations. Except they'd have to upgrade Cabal to support configurations first). Thanks Ian