I've put together an experimental package of Ghc 7.8 for ArchLinux. It's pulling the sources from git (the branch ghc-7.8 from git.haskell.org) and it basically performs the following steps to build and install: ./sync-all -r git://git.haskell.org get -b ghc-7.8 ./boot ./configure --prefix=/usr make -j 5 make DESTDIR=<the packaging dir> install The build and install completes successfully, and some trivial tests work (compiling hello-world, playing a bit with ghci, that sort of thing). However, compiling mtl fails, with this message: Configuring mtl-2.1.2... Building mtl-2.1.2... Preprocessing library mtl-2.1.2... [ 1 of 21] Compiling Control.Monad.Writer.Class ( Control/Monad/Writer/Class.hs, dist/build/Control/Monad/Writer/Class.o ) ghc: could not execute: /usr/lib/ghc-7.8.0.20140204/ghc-split And indeed, ghc-split is not installed using `make install`. Is this a known bug? /M -- Magnus Therning OpenPGP: 0xAB4DFBA4 email: magnus@therning.org jabber: magnus@therning.org twitter: magthe http://therning.org/magnus I invented the term Object-Oriented, and I can tell you I did not have C++ in mind. -- Alan Kay