Hi Cafe! That's a capital "i" for anyone with font issues. I posted this question to beginners a while ago, but received no meaningful response so I'm trying cafe instead :-) Most packages I try to install off Hackage with cabal are giving me the error "ghc: unrecognised flags: -I". For example, when I "cabal install -v storable-complex" I get the following: /usr/bin/ghc -package-name storable-complex-0.2.1 --make -hide-all-packages -i -idist/build -i. -idist/build/autogen -Idist/build/autogen -Idist/build -I -optP-include -optPdist/build/autogen/cabal_macros.h -odir dist/build -hidir dist/build -stubdir dist/build -package base-3.0.3.1 -O Foreign.Storable.Complex ghc: unrecognised flags: -I I've updated everything several times since this error started occurring, but it persists. I've tried digging to find out where the lone -I is being injected but can't seem to track it down. Has anyone encountered this before, or more realistically, can anyone give me some advice on how to narrow this problem down further? I'm running cabal version 1.6.0.1, ghc 6.10.4 on OS X 10.5. Thanks guys!