Couldn't figure out what GHC version the project is using in macos m1 arch: spawn Unknown system error -86

[qcfu-bu]

M1 macbook pro. When starting up a cabal project the following error is displayed

Couldn't figure out what GHC version the project is using: spawn Unknown system error -86

The language server is not downloaded automatically.

I can confirm that both ghc and cabal are installed and configured on PATH correctly.

ghc version : 8.10.7
cabal version : 3.6.0.0

[qcfu-bu]

I figured out how to solve this issue. Turns out that the haskell-language-server-wrapper-1.4.0-darwin is not natively compatible with the m1 chip. Installing and enabling rosetta 2 in the terminal was able to solve this issue.

The command used to install rosetta 2.

softwareupdate --install-rosetta

[jneira]

Many thanks for reporting the isssue and the workaround. We aim to support macos m1 architecture directly, the issue tracking it is haskell/haskell-language-server#2008.
There you can check there are prebuilt binaries for m1 via ghcup. Unfortunately the extension does not download it automatically (see #458) so you have to install it using ghcup