On Wed, 2009-05-27 at 22:43 +0200, Johannes Waldmann wrote:
Hi all.
I've written some Haskell program, and I wanted to give it to a friend, in source form, so he can run and modify it, and learn some Haskell while doing so. I was using some cabalized extra packages but hey, this looks like the typical use case for the haskell-platform. So: I told him to install the newest stable ghc and the current platform release and this happens:
la:/home/b/appl.linux/haskell-platform-2009.2.0# ./configure ... checking for hsc2hs... /usr/local/bin/hsc2hs checking version of ghc... 6.10.3 checking version of ghc-pkg matches... yes checking ghc actually works... yes checking the ghc core packages are all installed... no configure: error: The core package editline-0.2.1.0 is missing. It should have been distributed with 6.10.2 ^^^^^^^^^^^^^^^^^^^^^^^^
When we released 2009.2.0, ghc-6.10.3 had not been released yet. I had hoped that the source based installer would work with 6.10.3, but we forgot that 6.10.3 was removing a package that had shipped with 6.10.2, hence the error you see. You can hack the list of expected packages or use --enable-unsupported-ghc-version or wait 'til the release next week of 2009.2.0.1 which will use ghc 6.10.3.
What's the particular reason for the failure? editline was distributed with ghc-6.10.2, but not with 6.10.3? I wouldn't expect an incompatible change when (only) the patchlevel is bumped.
It's a bit unfortunate. The way we're coping with it in 2009.2.0.1 is that we supply editline.
The platform web site should probably replace "works with ghc-6.10.x" by "works with ghc-6.10.2 only".
Yes. Duncan