GHC无法找到动态库-无法找到模块'Data.Functor.Reverse'

Question

GHCi-7.8.4 will not load anything from transformers library as it cannot find the GHCi file. What is wrong?

Prelude> import Data.Functor.Reverse

<no location info>:
    Could not find module ‘Data.Functor.Reverse’
    Perhaps you haven't installed the "dyn" libraries for package ‘transformers-0.4.3.0’?
    Use -v to see a list of the files searched for.

Locations searched:
  /home/jdm/.cabal/lib/transformers-0.4.3.0/ghc-7.8.4/Data/Functor/Reverse.dyn_hi

Answer 1

https://mail.haskell.org/pipermail/haskell-cafe/2009-December/071442.html

Use the --enable-shared option to cabal install.

If you want dynamic libraries everywhere, put shared: True in ~/.cabal/config . You'll need to recompile all of your libraries.