如何使堆栈不将“-fdiagnostics-color=always”传递给 GHC答案

【问题标题】：How do I make stack not pass "-fdiagnostics-color=always" to GHC如何使堆栈不将“-fdiagnostics-color=always”传递给 GHC
【发布时间】：2018-06-23 16:14:52
【问题描述】：

我是最近迁移到最新堆栈 (1.6.3) 和最新 GHC (8.2.2) 的 Windows 用户。似乎在最新的 GHC 中可能会出现带有错误消息的颜色输出。颜色通过 Windows 无法理解的 ANSI 转义序列发生，因此它只是在真实文本之间显示一堆垃圾文本。

[1 of 2] Compiling IOSystem.Haskeline ( app\IOSystem\Haskeline.hs, .stack-work\dist\5c8418a7\build\galbreak\galbreak-tmp\IOSystem\Haskeline.o )

←[;1mapp\IOSystem\Haskeline.hs:28:13: ←[;1m←[31merror:←[0m←[0m←[;1m←[0m←[0m←[;1m
    * Couldn't match type `[Char]' with `Text'
      Expected type: InputT m (LineResult Text)
        Actual type: InputT m (Either LineFailure String)
    * In a stmt of a 'do' block: pure $ Right line
      In the expression:
        do modifyHistory $ addHistoryUnlessConsecutiveDupe line
           pure $ Right line
      In a case alternative:
          Just line
            -> do modifyHistory $ addHistoryUnlessConsecutiveDupe line
                  pure $ Right line←[0m←[0m
←[;1m←[34m   |←[0m←[0m
←[;1m←[34m28 |←[0m←[0m             ←[;1m←[31mpure $ Right line←[0m←[0m
←[;1m←[34m   |←[0m←[0m←[;1m←[31m             ^^^^^^^^^^^^^^^^^←[0m←[0m
←[0m←[0m←[0m

我尝试将ghc-options: -fdiagnostics-color=never 放在我的 project.cabal 文件的库和可执行部分中，但它似乎没有效果。我用详细的输出重新运行，似乎堆栈将自己的“-fdiagnostics-color=always”命令放在我指定的 ghc 选项之后。

我只需要堆栈以某种方式不这样做。

stack -v --cabal-verbose build

（省略了很多文字）

2018-01-14 18:54:24.009085: [信息] "C:\Users\Daniel\AppData\Local\Programs\stack\x86_64-windows\ghc-8.2.2\bin\ghc.EXE" " --make" "-no-link" "-fbuilding-cabal-package" "-O" "-static" "-outputdir" ".stack-work\dist\5c8418a7\build\galbreak\galbreak-tmp" "- odir" ".stack-work\dist\5c8418a7\build\galbreak\galbreak-tmp" "-hidir" ".stack-work\dist\5c8418a7\build\galbreak\galbreak-tmp" "-stubdir" ".stack-工作\dist\5c8418a7\build\galbreak\galbreak-tmp" "-i" "-i.stack-work\dist\5c8418a7\build\galbreak\galbreak-tmp" "-iapp" "-i.stack-work\ dist\5c8418a7\build\galbreak\autogen" "-i.stack-work\dist\5c8418a7\build\global-autogen" "-I.stack-work\dist\5c8418a7\build\galbreak\autogen" "-I. stack-work\dist\5c8418a7\build\global-autogen" "-I.stack-work\dist\5c8418a7\build\galbreak\galbreak-tmp" "-IC:\Users\Daniel\AppData\Local\Programs\stack \x86_64-windows\msys2-20150512\mingw64\include" "-optP-include" "-optP.stack-work\dist\5c8418a7\build\galbreak\autogen\cabal_macros.h" "-hide-all-packages" " -Wmissing- home-modules" "-no-user-package-db" "-package-db" "C:\sr\snapshots\13cecb13\pkgdb" "-package-db" "D:\dev\galaxy-break.stack-工作\安装\ccbce92a\pkgdb" "-package-db" ".stack-work\dist\5c8418a7\package.conf.inplace" "-package-id" "base-4.10.1.0" "-package-id" " text-1.2.2.2-9VTsh6V7U7hpagw2HDvpZ" "-package-id" "haskeline-0.7.4.2-DGuJCOcZAmc2Ddce2AkQr0" "-XHaskell2010" "IOSystem.Haskeline" "app\Main.hs" "-W" "-threaded" "-rtsopts " "-with-rtsopts=-N" "-O2" "-fdiagnostics-color=never" "-ddump-hi" "-ddump-to-file" "-fdiagnostics-color=always"

【问题讨论】：

标签： haskell-stack

【解决方案1】：

您可以使用--color never。

您似乎使用了不寻常的终端配置。解决此问题的一种选择可能是将 PR 提交到 ansi-terminal 以使https://hackage.haskell.org/package/ansi-terminal-0.8/docs/System-Console-ANSI.html#v:hSupportsANSI 为您的终端生成False

目前无法在您的 config.yaml 中指定此内容，但也许应该是 - 我已打开 https://github.com/commercialhaskell/stack/issues/3778 以跟踪添加它。不是高优先级

【讨论】：

完全标准的windows命令行？只需cmd.exe。通常cmd.exe 与 Vanilla 或 Chocolate ansi-terminal 变体一起使用，Strawberry 变体应该在 Win32 上产生空字符串。（也就是说，传递给堆栈的--color never 标志确实解决了这个问题）。
一位用户将此追踪到 Windows 10 秋季创建者更新中的更改 - github.com/commercialhaskell/stack/issues/3797。通过该更新，终端不再默认解释转义码，应用程序需要明确要求启用它。
我没有使用 Windows 10，我使用的是 Windows 7。