我一直試圖做cabal install hoogle但與haskell-src-exts-1.13.5依賴一個hickup: Configuring haskell-src-exts-1.13.5...
setup: The program happy version >=1.17 is required but it could not be found.
當我嘗試做cabal insta
我有當前版本的cabal和運行cabal install Pipe給了我沒有問題。但我想這兩個進口: import Control.Proxy
import Control.Pipe
但我收到此錯誤信息: Could not find module `Control.Pipe'
It is not a module in the current program, or in any kno