[1 of 1] Compiling Main             ( /tmp/cuda-0.5.1.0-2812/cuda-0.5.1.0/Setup.hs, /tmp/cuda-0.5.1.0-2812/cuda-0.5.1.0/dist/setup/Main.o )
Linking /tmp/cuda-0.5.1.0-2812/cuda-0.5.1.0/dist/setup/setup ...
Configuring cuda-0.5.1.0...
Dependency base ==4.6.0.1: using base-4.6.0.1
Dependency bytestring ==0.10.0.2: using bytestring-0.10.0.2
setup: The program c2hs version >=0.16 is required but it could not be found.