首先,我创建了一个新工作区:
stack new xxxx
stack init
stack build
然后
cd xxx\app
stack ghci
import Data.Map
我可以导入像Data.Char和的其他模块Data.List,但我无法导入Data.Map.GHCi告诉我:
Could not find module 'Data.Map'
It is a member of the hidden package 'containers-0.5.7.1@containers-0.5.7.1'.`