languages.toml giving error after building 23.05 from source

[sourproton]

I have the following languages.toml:

[[language]]
name = "python"
roots = ["pyproject.toml"]

[language.language-server]
command = "pyright-langserver"
args = ["--stdio"]

[language.config] # <- this is the important line


[[language]]
name = "rust"

[language.config]
check = { command = "clippy" }

, which worked fine in version 23.03.

After updating the helix directory with git pull and building from source with cargo install --path helix-term --locked and ln -s $PWD/runtime ~/.config/helix/runtime, I have the following error when launching helix:

Bad language config: unknown field `config`, expected one of `name`, `language-id`, `scope`, `file-types`, `shebangs`, `roots`, `comment-token`, `text-width`, `soft-wrap`, `auto-format`, `formatter`, `diagnostic-severity`, `grammar`, `injection-regex`, `language-servers`, `indent`, `debugger`, `auto-pairs`, `rulers`, `workspace-lsp-roots`
in `language`

[pascalkuthe]

There were breaking changes recently in the master branch. Check the master docs

[sourproton]

Thank you for pointing this out. I assumed the instructions in the installation page of the regular docs were for installing the latest stable, not master. What is the correct way of installing the stable branch then? git clone then git checkout tags/23.05 before cargo install?

[quomat]

Note for the future reference: The config field was moved to (in this case) [language-server.pyright-langserver]. In general, [language-server.$name].

So to repair clippy you just need to change

[language.config]
check = { command = "clippy" }

to

[language-server.rust-analyzer.config]
checkOnSave = { command = "clippy" }

I don't know why, but only checkOnSave works for me here, even though the rust-analyzer documentation doesn't even say that checkOnSave has a command property, so you can try both checkOnSave as well as check.