在尝试安装friday包时，我收到了错误
Preprocessing library friday-0.2.2.0...
src/Vision/Detector/Edge.hs:3:14: Unsupported extension: MultiWayIf
cabal: Error: some packages failed to install:
friday-0.2.2.0 failed during the building phase. The exception was:
ExitFailure 1
如何解决此错误？
我正在使用ghc版本7.4.1和
cabal-install version 0.14.0
using version 1.14.0 of the Cabal library