Hello, I tried to install ghc 6.6 but apparently I have done something wrong since whenever I type ghc I obtain: $ /usr/local/bin/ghc dyld: Library not loaded: /opt/local/lib/libreadline.5.1.dylib Referenced from: /usr/local/lib/ghc-6.6/ghc-6.6 Reason: image not found Trace/BPT trap can anyone help please?