On my MacOSX box, compiling xmonad fails with the following error message. On my Debian etch box, it works fine. Comparing ghc-pkg output, I note that the OSX box has more packages, and some in more recent versions, than etch. But I have no idea where to start looking for the problems. Below, please find (1) ghc-pkg list output for etch, (2) ghc-pkg list output for OSX, (3) build output for OSX. Just prior to sending the mail, I verified using "darcs pull" that my sources (and XMonadContrib) are up to date. tia, Kai (1) ghc-pkg list on etch: ketchup% ghc-pkg list /usr/lib/ghc-6.6/package.conf: Cabal-1.1.6, X11-1.2, X11-extras-0.1, base-2.0, (ghc-6.6), haskell98-1.0, mtl-1.0, parsec-2.0, readline-1.0, regex-base-0.71, regex-compat-0.71, regex-posix-0.71, rts-1.0, stm-2.0, template-haskell-2.0, unix-1.0 /home/kgrossjo/.ghc/i386-linux-6.6/package.conf: X11-1.2.2, X11-extras-0.2 (2) ghc-pkg list on OSX: marcie% ghc-pkg list /opt/local/lib/ghc-6.6.1/package.conf: Cabal-1.1.6.2, GLUT-2.1.1, HGL-3.1.1, HUnit-1.1.1, OpenGL-2.2.1, QuickCheck-1.0.1, X11-1.2.1, base-2.1.1, cgi-3001.1.1, fgl-5.4.1, filepath-1.0, (ghc-6.6.1), haskell-src-1.0.1, haskell98-1.0, html-1.0.1, mtl-1.0.1, network-2.0.1, parsec-2.0, readline-1.0, regex-base-0.72, regex-compat-0.71, regex-posix-0.71, rts-1.0, stm-2.0, template-haskell-2.1, time-1.1.1, unix-2.1, xhtml-3000.0.2 /Volumes/Data/Users/kai/.ghc/powerpc-darwin-6.6.1/package.conf: X11-1.2.2, X11-extras-0.2 (3) build output on OSX: marcie% make build runhaskell Setup.lhs clean cleaning... runhaskell Setup.lhs configure --user --prefix=/opt/sw/xmonad Configuring xmonad-0.2... configure: Dependency base>=2.0: using base-2.1.1 configure: Dependency X11>=1.2.1: using X11-1.2.2 configure: Dependency X11-extras>=0.2: using X11-extras-0.2 configure: Dependency mtl>=1.0: using mtl-1.0.1 configure: Dependency unix>=1.0: using unix-2.1 configure: Using install prefix: /opt/sw/xmonad configure: Binaries installed in: /opt/sw/xmonad/bin configure: Libraries installed in: /opt/sw/xmonad/lib/xmonad-0.2/ghc-6.6.1 configure: Private binaries installed in: /opt/sw/xmonad/libexec configure: Data files installed in: /opt/sw/xmonad/share/xmonad-0.2 configure: Using compiler: /opt/local/bin/ghc configure: Compiler flavor: GHC configure: Compiler version: 6.6.1 configure: Using package tool: /opt/local/bin/ghc-pkg configure: Using ar found on system at: /usr/bin/ar configure: No haddock found configure: No pfesetup found configure: Using ranlib found on system at: /usr/bin/ranlib configure: Using runghc found on system at: /opt/local/bin/runghc configure: No runhugs found configure: No happy found configure: No alex found configure: Using hsc2hs: /opt/local/bin/hsc2hs configure: No c2hs found configure: No cpphs found configure: No greencard found runhaskell Setup.lhs build Preprocessing executables for xmonad-0.2... Building xmonad-0.2... [ 1 of 10] Compiling StackSet ( StackSet.hs, dist/build/xmonad/xmonad-tmp/StackSet.o ) [ 2 of 10] Compiling XMonad ( XMonad.hs, dist/build/xmonad/xmonad-tmp/XMonad.o ) [ 3 of 10] Compiling XMonadContrib.DynamicLog ( XMonadContrib/DynamicLog.hs, dist/build/xmonad/xmonad-tmp/XMonadContrib/DynamicLog.o ) [ 4 of 10] Compiling XMonadContrib.Dmenu ( XMonadContrib/Dmenu.hs, dist/build/xmonad/xmonad-tmp/XMonadContrib/Dmenu.o ) [ 5 of 10] Compiling Config[boot] ( Config.hs-boot, nothing ) [ 6 of 10] Compiling Operations ( Operations.hs, dist/build/xmonad/xmonad-tmp/Operations.o ) Operations.hs:188:9: Not in scope: `changeProperty32' Operations.hs:194:12: Not in scope: `unmapWindow' Operations.hs:514:15: Not in scope: `getWMNormalHints' Operations.hs:528:18: Not in scope: type constructor or class `SizeHints' Operations.hs:530:51: Not in scope: `sh_max_size' Operations.hs:531:51: Not in scope: `sh_base_size' Operations.hs:532:51: Not in scope: `sh_resize_inc' Operations.hs:533:51: Not in scope: `sh_aspect' Operations.hs:534:51: Not in scope: `sh_base_size' make: *** [build] Error 1 zsh: exit 2 make build