Autocompletion doesn't work at all, with cabal-helper-wrapper related errors

[marmistrz]

2018-02-28 11:25:30.079606543 [ThreadId 4] - Setting home directory:/home/marcin
2018-02-28 11:25:30.08072305 [ThreadId 4] - run entered for HIE Version 0.1.0.0, Git revision dd262b8283b3584d9d106bc842eae894826495ca (1205 commits) x86_64 ghc-8.2.2
2018-02-28 11:25:30.081598744 [ThreadId 4] - Current directory:/home/marcin
hie: Could not find $libexecdir/cabal-helper-wrapper

If you are a cabal-helper developer you can set the environment variable
`cabal_helper_libexecdir' to override $libexecdir[1]. The following will
work in the cabal-helper source tree:

    $ export cabal_helper_libexecdir=$PWD/dist/build/cabal-helper-wrapper

[1]: /home/marcin/.cache/pacaur/haskell-ide-engine-git/src/haskell-ide-engine/.stack-work/install/x86_64-linux-tinfo6-nopie/nightly-2018-02-26/8.2.2/libexec/x86_64-linux-ghc-8.2.2/cabal-helper-0.8.0.2

If you don't know what I'm talking about something went wrong with your
installation. Please report this problem here:

    https://github.com/DanielG/cabal-helper/issues

I installed haskell-ide-engine-git from AUR (Arch Linux). I can't find cabal-helper-wrapper anywhere in my FS.

Even if something went wrong in my setup, maybe vscode-hie-server could make a GUI warning that something went wrong?

[jneira]

Hie does not use cabal-helper-wrapper anymore so, at least the error should be different.
@marmistrz could you try with latest hie?