Stefan, master-merge-ios is currently based on the latest mainline. Unfortunately a normal ("quick") build of a clean checkout of ghc mainline is currently breaking on Linux, so I don't fancy your chances on iOS. So either go back to before the activity of the last day or so, or we wait for the GHC people to fix it. Steve "/usr/local/ghc-head/lib/ghc-7.7.20130326/bin/ghc-pkg" --force --global-package-db "/usr/local/ghc-head/lib/ghc-7.7.20130326/package.conf.d" update rts/package.conf.install /usr/local/ghc-head/lib/ghc-7.7.20130326/bin/ghc-pkg: error while loading shared libraries: libHSterminfo-0.3.2.5-ghc7.7.20130326.so: cannot open shared object file: No such file or directory make[1]: *** [install_packages] Error 127 make: *** [install] Error 2 Also the inplace/bin/ghc-stage1 and stage2 binaries don't work: blackh@amentet:~/src/ghc-ios/ghc$ inplace/bin/ghc-stage1 hello.hs hello.hs:1:1: Could not find module ‛Prelude’ There are files missing in the ‛base’ package, try running 'ghc-pkg check'. Use -v to see a list of the files searched for.