Hi, I've been using Xmonad 0.7 on my OpenSolaris 2008.11 machine for a couple of weeks. I built it using the GHC 6.8.1 tarball from haskell.org, which needed a few extra packages from the OpenSolaris 'pending' repository. Here's the recipe that worked for me: 1. Add the OpenSolaris pending repository to the package manager: (as root) pkg set-authority -O http://pkg.opensolaris.org/pending opensolaris-pending (or use the GUI tool) 2. Install some packages that GHC and the Haskell X11 library will need: (as root) pkg install gmp readline5 SUNWncurses SUNWxorg-headers (or use the GUI) 3. Install ghc-6.8.3 from the tarball here: http://haskell.org/ghc/download_ghc_683.html#x86solaris 4. export LD_LIBRARY_PATH=/usr/gnu/lib:$LD_LIBRARY_PATH 5. Build and install the X11 package from Hackage: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/X11 6. Build and install xmonad-0.7 and xmonad-extras-0.7 (http://hackage.haskell.org/cgi-bin/hackage-scripts/package/xmonad-0.7 and http://hackage.haskell.org/cgi-bin/hackage-scripts/package/xmonad-contrib-0....). You may find it more convenient to compile the Setup.hs file (ghc --make Setup; ./Setup build...) than to use runhaskell. If you have trouble at the install step and you have su'ed to root, check that LD_LIBRARY_PATH is still set in the root shell. 7. Edit ~/.Xclients to include at least the following lines: export PATH=/usr/local/bin:$PATH export LD_LIBRARY_PATH=/usr/gnu/lib:$LD_LIBRARY_PATH xmonad 8. Log out. At the GDM login window, click the 'Option' button, choose '2. Run Xclient script', click 'Change session' and then log in. 9. If all your windows have tags like [English/European] at the bottom, edit your /etc/default/init file and change the LANG=<whatever> line to read LANG=C. You need to reboot to for this change to take effect. If Xmonad doesn't start when you log back in, you can get back to Gnome by killing X (press Ctrl-Alt-Backspace) and choosing Gnome in the Option menu on the GDM login window. I tried to install the GHC 6.10 tarball from haskell.org, but it has some prerequisites that are not available in the OpenSolaris repositories. I haven't tried Xmonad 0.8.1 yet. Also, note that software from the OpenSolaris pending repository is untested and not supported - so far I haven't had any trouble but you should take care. I've used this recipe on two different machines, so with a bit of luck it's got all the necessary steps! Good luck! Euan