[ I've CC'd to Andres as his function(?) as the GHC Gentoo maintainer/packager. ]
* Build GHC from the CVS main branch or the nightly snapshots (available at http://www.haskell.org/ghc/dist/current/dist/). I've got no idea how to do this via the ebuild system, but perhaps Andres Loeh can help. He seems to be the maintainer/packager for GHC on Gentoo.
I have a ghc-cvs ebuild for personal use which I can share. http://dev.gentoo.org/~kosmikus/ghc-cvs-6.3.ebuild You can download the ebuild, place it in your local portage overlay, for instance in /usr/local/dev-lang/ghc, create a digest, and then emerge it to build an up-to-date ghc from cvs. Please note that I do not officially support this build, so if you have problems, please do not write bug reports to Gentoo, but ask me personally. There's a small problem even then: Just a few days ago, I wanted to test HOpenGL for something and noticed the following (which happens both with the CVS version and with 6.2.1): $ ghci-cvs -package OpenGL ___ ___ _ / _ \ /\ /\/ __(_) / /_\// /_/ / / | | GHC Interactive, version 6.3, for Haskell 98. / /_\\/ __ / /___| | http://www.haskell.org/ghc/ \____/\/ /_/\____/|_| Type :? for help. Loading package base ... linking ... done. Loading package OpenGL ... ghc-6.3: can't load .so/.DLL for: GLU (/usr/lib/libGLU.so: undefined symbol: glPixelStorei) I noticed that a similar problem has been discussed a while ago on the hopengl mailing list, and according to that thread, I found a solution, namely to edit ghc's package.conf file and to make sure that -lGL comes before -lGLU in extra_ld_opts. However, because it has been discussed before, I am surprised that I still suffer from this problem. Am I doing something wrong? Is there something I can do to fix this problem in the ebuild? Best, Andres