cabal-helper-wrapper "print-build-platform" (exit 1): failed.

When i open a .hs file in vscode, an error occurred following:

Got error while processing diagnostics: readCreateProcess: /Users/foo/dev/study/haskell-ide-engine/.stack-work/install/x86_64-osx/lts-13.0/8.6.3/bin/cabal-helper-wrapper "print-build-platform" (exit 1): failed

$ stack ghc -- --version
The Glorious Glasgow Haskell Compilation System, version 8.6.3

MacOS : 10.14.2
vscode : 1.30.1(1.30.1)

[alanz]

Does /Users/foo/dev/study/haskell-ide-engine/.stack-work/install/x86_64-osx/lts-13.0/8.6.3/bin/cabal-helper-wrapper exist?

After installing hie, you have to leave the directory intact that it was installed from.

Yep, That file exists.

$ ls -l /Users/foo/dev/study/haskell-ide-engine/.stack-work/install/x86_64-osx/lts-13.0/8.6.3/bin/cabal-helper-wrapper
.rwxr-xr-x      1 6.8Mi foo staff 2018-12-29 18:53 /Users/foo/dev/study/haskell-ide-engine/.stack-work/install/x86_64-osx/lts-13.0/8.6.3/bin/cabal-helper-wrapper

[alanz]

And what happens if you run

/Users/foo/dev/study/haskell-ide-engine/.stack-work/install/x86_64-osx/lts-13.0/8.6.3/bin/cabal-helper-wrapper print-build-platform

The result:

$ /Users/foo/dev/study/haskell-ide-engine/.stack-work/install/x86_64-osx/lts-13.0/8.6.3/bin/cabal-helper-wrapper print-build-platform
cabal-helper-wrapper: dieVerbatim: user error (cabal-helper-wrapper: The program 'ghc' version >=7.0.1 is required but it
could not be found.
)

Hmm, do i need to expose ghc command on my bash environment? I am using stack ghc instead of ghc:

$ ghc --version
zsh: command not found: ghc

$ stack ghc -- --version
The Glorious Glasgow Haskell Compilation System, version 8.6.3

[alanz]

It looks like the wrapper is also expecting a system ghc to be installed.

What I do is just symlink the stack one in to a location on the path somewhere, but in the meantime this is a bug, I will look into it.

[alanz]

This line is the problem.

https://github.com/alanz/cabal-helper/blob/cabal-new-legacy/src/CabalHelper/Compiletime/Wrapper.hs#L162

Oh, you are right. Thanks. I appended a path for ghc into my .zshrc file following. And the error was gone. Is this a right way to fix this error, especially the path for ghc ?:

export PATH=~/.stack/programs/x86_64-osx/ghc-8.6.3/bin:$PATH

Or

export PATH=$(stack path | grep ^bin-path):$PATH

[alanz]

you can also use

export PATH=$(stack path --compiler-exe):$PATH

I assume --compiler-exe should be --compiler-bin... :)

$ stack path --compiler-exe
/Users/foo/.stack/programs/x86_64-osx/ghc-8.6.3/bin/ghc

$ stack path --compiler-bin
/Users/foo/.stack/programs/x86_64-osx/ghc-8.6.3/bin

[FledgeXu]

Hey Guys,I have the same problem.

  ls -l /Users/fledge/Develpment/haskell-ide-engine/.stack-work/install/x86_64-osx/lts-13.5/8.6.3/bin/cabal-helper-wrapper

-rwxr-xr-x  1 fledge  staff  7089880 Feb 21 20:41 /Users/fledge/Develpment/haskell-ide-engine/.stack-work/install/x86_64-osx/lts-13.5/8.6.3/bin/cabal-helper-wrapper

When I run the cabal-helper-wapper, It shows:

cabal-helper-wrapper: dieVerbatim: user error (cabal-helper-wrapper: The program 'ghc' version >=7.0.1 is required but it
could not be found.
)

what should I do?

Should I install ghc above 7.0 by stack?

@FledgeXu You should add ghc command to PATH environment variable of your shell.

[FledgeXu]

@jinbeomhong It works! Thank you for your help.

[krikchaip]

I assume --compiler-exe should be --compiler-bin... :)

$ stack path --compiler-exe
/Users/foo/.stack/programs/x86_64-osx/ghc-8.6.3/bin/ghc

$ stack path --compiler-bin
/Users/foo/.stack/programs/x86_64-osx/ghc-8.6.3/bin

Hi there,
I already did this. but the error still occurs 😕

$ haskell-ide-engine/.stack-work/install/x86_64-osx/lts-12.26/8.4.4/bin/cabal-helper-wrapper print-build-platform
x86_64-osx

$ stack ghc -- --version
The Glorious Glasgow Haskell Compilation System, version 8.4.4