Lsp: streamingProcess: runInteractiveProcess: exec: does not exist (No such file or directory)

[JeremyBois]

Using a stack project I get the following error:

streamingProcess: runInteractiveProcess: exec: does not exist (No such file or directory)'

I check online and it seems nix have the same issue with stack.

For future reference (me): streamingProcess: runInteractiveProcess: exec: does not exist usually means it called an executable that failed to run since dynamic libraries weren't there, meaning you ran nix-collect-garbage.

Related to commercialhaskell/stack#2282

_Originally posted by @JeremyBois in https://github.com/sublimelsp/LSP/issues/1529#issuecomment-749432945_

[JeremyBois]

The solution is to update the PATH to include missing binaries or libraries.

One solution is to update the ~/.profile with needed path:

### Home
export PATH=$PATH:~/.local/bin:~/bin

### ghcup-hs
export PATH=$PATH:~/.ghcup/bin

### Cabal
export PATH=$PATH:~/.cabal/bin

Another solution is to update the env variable in the server configuration (replace <Home_path> by your Home path):

"haskell-language-server":
{
    "command":
    [
        "haskell-language-server-wrapper",
        "--lsp"
    ],

    // ...

    "env":
    {
        "PATH": "/usr/local/bin:/usr/bin:<Home_path>/.local/bin:<Home_path>/bin:<Home_path>/.ghcup/bin:<Home_path>/.cabal/bin"
    }
}

[rwols]

Awesome! @moodmosaic perhaps you can expand on this in the docs? Could be a blocker for more users.

[JeremyBois]

Awesome! @moodmosaic perhaps you can expand on this in the docs? Could be a blocker for more users.

Yeah sure I will.

Thanks again !

[moodmosaic]

I'd be more than happy to do so, but first I must follow the thread. Perhaps the best person to do this is @JeremyBois. If not, I can look into it over the next few days.

[JeremyBois]

Oh I misread @rwols comment ...

@moodmosaic, I will try to update the docs today if possible if it's ok. I just first want to finish to setup and test everything is working on my side in different project configurations.

If I have issues with the process I will ask for help.

[moodmosaic]

@JeremyBois :+1: :rocket: