Dear Sir or Madam:: Sorry to trouble you! I am a beginner of Haskell and I just run into problems to install it. Things went smoothly when I do ./configure,but when I do the command 'make',errors appeared. The errors are as follows(red font): $make scripts/build.sh Building "/usr/bin/ghc" "--make" "Setup" "-o" "Setup" "-package" "Cabal" Linking Setup ... "./Setup" "configure" "--package-db=../../packages/package.conf.inplace" "--prefix=/usr/local" "--with-compiler=/usr/bin/ghc" "--with-hc-pkg=/usr/bin/ghc-pkg" "--with-hsc2hs=/usr/bin/hsc2hs" "--enable-library-profiling" Setup: Unrecognised flags: --package-db=../../packages/package.conf.inplace Error: Configuring the mtl-1.1.0.2 package failed make: *** [build.stamp] Error 2 So I do hope you can give me some suggestions. Thank you very much! Best wishes, Yours, juan