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当我ghc-mod version正常执行时,它会打印这样的信息:

ghc-mod version 5.0.1.2 compiled by GHC 7.8.3

但是如果 .cabal 文件在当前目录中,它将打印如下错误消息:

cabal configure failed: user error (cabal configure (exit 1)
cabal: At least the following dependencies are missing:
HUnit -any, hspec -any, testloop -any
)

我应该如何解决这个问题?

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