add the Numeric and Prelude modules, and add ioError/catch to System.IO.Error
drwxr-xr-x - Control
drwxr-xr-x - Data
-rw-r--r-- 650 Foreign.hs
drwxr-xr-x - Foreign
-rw-r--r-- 618 LICENSE
-rw-r--r-- 1532 Numeric.hs
-rw-r--r-- 5053 Prelude.hs
drwxr-xr-x - System
-rw-r--r-- 1797 haskell2010.cabal