haskell - 构建命令后的 Cabal(Haskell 构建系统)

Question

是否可以在构建应用程序后告诉 Cabal 运行某些命令？

例如，我想使用脚本生成一些 .hs 文件，并在构建后将一些其他文件复制到 dist/build/app 目录。

Answer 1

是的。查看 postInst 和相关类型/操作。

Distribution.Simple.UserHooks

这是一个简单的示例，您可以搜索相关操作以了解更多信息。这会在 cabal 构建之后执行各种 .sh 脚本、复制文件等。absoluteInstallDirs 告诉你 cabal 将其他文件放在哪里，应该你需要它。

希望这有帮助!

import Distribution.Simple
import Distribution.Simple.LocalBuildInfo
import System.Process
import System.Exit

main = defaultMainWithHooks fixpointHooks

fixpointHooks  = simpleUserHooks { postInst = buildAndCopyFixpoint } 

buildAndCopyFixpoint _ _ pkg lbi 
  = do putStrLn $ "Post Install: " ++ show binDir -- , libDir)
       executeShellCommand "./configure"
       executeShellCommand "./build.sh"
       executeShellCommand $ "chmod a+x external/fixpoint/fixpoint.native "
       executeShellCommand $ "cp external/fixpoint/fixpoint.native " ++ binDir
       executeShellCommand $ "cp external/z3/lib/libz3.* " ++ binDir
  where 
    allDirs     = absoluteInstallDirs pkg lbi NoCopyDest
    binDir      = bindir allDirs ++ "/"

executeShellCommand cmd   = putStrLn ("EXEC: " ++ cmd) >> system cmd >>= check
  where 
    check (ExitSuccess)   = return ()
    check (ExitFailure n) = error $ "cmd: " ++ cmd ++ " failure code " ++ show n
fixpointHooks  = simpleUserHooks { postInst = buildAndCopyFixpoint }