Figured it out ;) Posting this here in case someone googles the same problem. The issue was that I installed the unix package, which is bundled already with 6.10.1. See bug here: http://hackage.haskell.org/trac/ghc/ticket/3060 On Thu, Apr 16, 2009 at 8:37 AM, Joseph Garvin wrote:

I haven't made any progress on figuring out what the problem is, but I did run truss on the configure and build steps. Nothing stuck out to me but maybe someone else spots something wrong, output attached.

On Tue, Apr 14, 2009 at 9:56 AM, Joseph Garvin wrote:

...

I'm trying to get xmonad compiled under Solaris 10 and I'm running into an issue with the build step. The configure step appears to go fine, but I suspect is failing silently, because when I try the build step, it tells me I need to run the configure step first (even though I already have). I've installed ghc as a user in ~/ghc-6.10.1 and I'm installing xmonad to my home folder as well. Here's the configure line I'm using:

runhaskell Setup.lhs configure --user --prefix=/home/joeg/xmonad-install --extra-lib-dirs=/home/joeg/ghc-6.10.1-install/lib

Also, ~/ghc-6.10.1-install/bin is in my PATH.