Hi all I tried compiling ghc 6.7 during the night. I used the following script: #!/bin/bash rm -rf $HOME/ghc darcs get --partial http://darcs.haskell.org/ghc cd ghc chmod +x darcs-all ./darcs-all get ./darcs-all --extra get sh boot ./configure --prefix=$HOME echo "Checkpoint make" make echo "Checkpoint make install" make install but when I run ghci I get: GHCi, version 6.7.20070810: http://www.haskell.org/ghc/ :? for help <interactive>:1:22: Failed to load interface for `System.IO': Use -v to see a list of the files searched for. <interactive>:1:22: Failed to load interface for `System.IO': Use -v to see a list of the files searched for. <interactive>:1:22: Failed to load interface for `System.IO': Use -v to see a list of the files searched for. ghc-6.7.20070810: panic! (the 'impossible' happened) (GHC version 6.7.20070810 for i386-unknown-linux): interactiveUI:setBuffering Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Is this really a bug or am I doing something wrong? I also tried: ghc-pkg check and got: package ghc-6.7.20070810 has missing dependencies: hpc, template-haskell, readline, unix, Cabal, base, haskell98 If anybody is interested I got the complete build logs, but given there size 2.2 megabytes (180 kilo when compressed with gzip) I choose not to include them in the message. Greetings, Mads Lindstrøm