lists:

Hi folks,

I wrote a program that uses some of the Data.ByteString libraries. I'm using GHC 6.4.1 and FPS 0.7.

The program compiles and works just fine. But when I try to profile it, by compiling with -prof, I get:

Failed to load interface for `Data.ByteString.Lazy': Could not find module `Data.ByteString.Lazy': locations searched: Data/ByteString/Lazy.hi Data/ByteString/Lazy.hi-boot /f/g/lib/fps-0.7/Data/ByteString/Lazy.p_hi

Why can it find the module when it's compiling without -prof, but not when it's compiling with it? I would really like to get profiling to work.

Probably you didn't build fps with profiling as well? You can rebuild fps with: runhaskell Setup.hs configure -p as the first step. -- Don