*** setup configure Reading installed packages... /usr/local/bin/ghc-pkg dump --global /usr/local/bin/ghc-pkg dump --user Creating setup (and its parents) /usr/local/bin/ghc -package Cabal-1.8.0.2 --make Setup.hs -o setup/setup -odir setup -hidir setup [1 of 1] Compiling Main ( Setup.hs, setup/Main.o ) Setup.hs:39:41: Couldn't match expected type `Distribution.Simple.Program.Db.ProgramDb' against inferred type `VersionRange' In the third argument of `requireProgram', namely `AnyVersion' In a stmt of a 'do' expression: (pgconfigProg, _) <- requireProgram verbosity pgconfigProgram AnyVersion (withPrograms lbi) In the expression: do { (pgconfigProg, _) <- requireProgram verbosity pgconfigProgram AnyVersion (withPrograms lbi); let pgconfig = rawSystemProgramStdout verbosity pgconfigProg; incDir <- pgconfig ["--includedir"]; libDir <- pgconfig ["--libdir"]; .... } *** Trying again with preferred-versions *** setup configure Reading installed packages... /usr/local/bin/ghc-pkg dump --global /usr/local/bin/ghc-pkg dump --user Creating setup (and its parents) /usr/local/bin/ghc -package Cabal-1.8.0.2 --make Setup.hs -o setup/setup -odir setup -hidir setup [1 of 1] Compiling Main ( Setup.hs, setup/Main.o ) Setup.hs:39:41: Couldn't match expected type `Distribution.Simple.Program.Db.ProgramDb' against inferred type `VersionRange' In the third argument of `requireProgram', namely `AnyVersion' In a stmt of a 'do' expression: (pgconfigProg, _) <- requireProgram verbosity pgconfigProgram AnyVersion (withPrograms lbi) In the expression: do { (pgconfigProg, _) <- requireProgram verbosity pgconfigProgram AnyVersion (withPrograms lbi); let pgconfig = rawSystemProgramStdout verbosity pgconfigProg; incDir <- pgconfig ["--includedir"]; libDir <- pgconfig ["--libdir"]; .... }