On Jan 14, 2007, at 18:53 , Neil Mitchell wrote:
Hi,
The Yhc compiler depends on an increasingly large number of Cabal
packages - mtl and FilePath at the moment, but soon thats likely to
increase by at least 3. Cabal is not yet mature enough to compile Yhc,
and fitting in a compile of bits with Cabal will be quite hard because
of the existing complexity in Scons.
So what we'd really like to do is be able to call "cabal
check-its-installed FilePath", which would return an appropriate exit
code. If it wasn't installed then a darcs get, followed by a "cabal
install-it-please" would be very handy.
Does cabal-install provide the necessary bits for this? What is the
result of installing a package that is already installed? How long til
this kind of solution will be widely enough deployed that we can
actually use it? Does anyone else have any other suggestions?
I think that cabal-install can do what you want already (except the
darcs get, it downloads a tarball from Hackage instead). Give it a
try and report any problems.
/Björn
_______________________________________________
cabal-devel mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/cabal-devel
