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我尝试通过 运行使用 Haskell QuickCheck 的程序ghc MyProgramm.hs，但收到以下错误：

$ ghc Ex2.hs 
[1 of 1] Compiling Ex2              ( Ex2.hs, Ex2.o )

Ex2.hs:21:1: error:
    Could not find module ‘Test.QuickCheck’
    There are files missing in the ‘QuickCheck-2.11.3’ package,
    try running 'ghc-pkg check'.
    Use -v to see a list of the files searched for.
   |
21 | import Test.QuickCheck (
   | ^^^^^^^^^^^^^^^^^^^^^^^^...

我安装stack，运行stack update并且stack install QuickCheck没有问题，但错误仍然存​​在。然后，我运行cabal install QuickCheck并收到以下错误：

$ cabal install QuickCheck
Resolving dependencies...
Configuring QuickCheck-2.12.4...
Building QuickCheck-2.12.4...
Failed to install QuickCheck-2.12.4
Build log ( /home/username/.cabal/logs/ghc-8.4.3/QuickCheck-2.12.4-3d2YDDqfPBn4BfmTJbpJXK.log ):
cabal: Entering directory '/tmp/cabal-tmp-9133/QuickCheck-2.12.4'
Configuring QuickCheck-2.12.4...
Preprocessing library for QuickCheck-2.12.4..
Building library for QuickCheck-2.12.4..
[ 1 of 16] Compiling Test.QuickCheck.Exception ( Test/QuickCheck/Exception.hs, dist/build/Test/QuickCheck/Exception.o )
[ 2 of 16] Compiling Test.QuickCheck.Random ( Test/QuickCheck/Random.hs, dist/build/Test/QuickCheck/Random.o )

Test/QuickCheck/Random.hs:10:1: error:
    Could not find module ‘System.Random’
    There are files missing in the ‘random-1.1’ package,
    try running 'ghc-pkg check'.
    Use -v to see a list of the files searched for.
   |
10 | import System.Random
   | ^^^^^^^^^^^^^^^^^^^^

Test/QuickCheck/Random.hs:11:1: error:
    Could not find module ‘System.Random.TF’
    There are files missing in the ‘tf-random-0.5’ package,
    try running 'ghc-pkg check'.
    Use -v to see a list of the files searched for.
   |
11 | import System.Random.TF
   | ^^^^^^^^^^^^^^^^^^^^^^^

Test/QuickCheck/Random.hs:12:1: error:
    Could not find module ‘System.Random.TF.Gen’
    There are files missing in the ‘tf-random-0.5’ package,
    try running 'ghc-pkg check'.
    Use -v to see a list of the files searched for.
   |
12 | import System.Random.TF.Gen(splitn)
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cabal: Leaving directory '/tmp/cabal-tmp-9133/QuickCheck-2.12.4'
cabal: Error: some packages failed to install:
QuickCheck-2.12.4-3d2YDDqfPBn4BfmTJbpJXK failed during the building phase. The
exception was:
ExitFailure 1

haskell-random但是，我已经有了 arch packageshaskell-tf-random并haskell-mwc-random安装了。有人知道如何解决这个问题吗？

编辑：我也跑了cabal install random --reinstall。

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1 回答 1

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即使我有一个main = do并且无法让它以这种方式工作，我还是能够运行我的 QuickCheck 测试，如下所示：

要运行 quickCheck，首先加载您的程序：

 $ ghci MyProg.hs

然后运行 ​​quickCheck，找到你想运行的测试，然后运行它：

 $ quickCheck my_quick_check
于 2018-09-20T16:44:26.180 回答