tutorial stack template is crashing lsp server in emacs

[MikHulk]

Hi,

I tried to do the tutorial here https://docs.servant.dev/en/stable/tutorial/ApiType.html#

When I create a new project with stack:

$ stack new test-servant servant

I get this layout:

test-servant
├── LICENSE
├── README.md
├── Setup.hs
├── app
│   └── Main.hs
├── package.yaml
├── src
│   └── Lib.hs
├── stack.yaml
├── stack.yaml.lock
├── test
│   └── Spec.hs
└── test-servant.cabal

If I try to open Lib.hs with emacs. The LSP server crash immediately with this error :

No 'hie.yaml' found. Try to discover the project type!
Run entered for haskell-language-server-wrapper(haskell-language-server-wrapper) Version 1.5.1.0 x86_64 ghc-8.10.7
Current directory: /Users/moi/Dev/Haskell/test-servant
Operating system: darwin
Arguments: ["--lsp","-d","-l","/var/folders/2k/p5hpgh1j4k55pxn46_msslsm0000gn/T/hls.log"]
Cradle directory: /Users/moi/Dev/Haskell/test-servant
Cradle type: Stack

Tool versions found on the $PATH
cabal:		3.6.2.0
stack:		2.7.3
ghc:		8.10.7


Consulting the cradle to get project GHC version...
Failed to get project GHC version:CradleError {cradleErrorDependencies = [], cradleErrorExitCode = ExitFailure 1, cradleErrorStderr = ["Error when calling stack setup --silent","",""]}

I don't know if this issue is related to the template or haskell lsp server.

[byorgey]

Possibly related? haskell/haskell-language-server#2224 Try removing .ghc/blahblah/environments/default . That has worked for me in the past when I've encountered similar issues.

[MikHulk]

Thank you indeed it works. I don't know why. But it works.