Question

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

$ 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 (
   | ^^^^^^^^^^^^^^^^^^^^^^^^...

我安装了stack，运行了stack update和stack install QuickCheck，没有问题，但错误仍然存在。然后，我运行cabal install QuickCheck并遇到以下错误：

$ 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

但是，我已经安装了拱形软件包haskell-random，haskell-tf-random和haskell-mwc-random。有人知道如何解决这个问题吗？

编辑：我还运行了cabal install random --reinstall。

Answer 1

即使我有一个main = do并且无法以这种方式工作，我仍然可以按以下方式运行QuickCheck测试：

要运行quickCheck，请首先使用以下命令加载程序：

 $ ghci MyProg.hs

然后运行quickCheck，找到要运行的测试，然后运行：

 $ quickCheck my_quick_check

Haskell QuickCheck-2.11.3软件包中缺少文件

1 个答案: