Formatting on save does not work with heex files.

The auto formatter does not work on heex files, even after setting up the configuration in my project correctly and adding the elixir-ls plugin as the default formatter in settings.json. If I run a mix format in the terminal, the heex files are formatted.

# .formatter.exs
[
  import_deps: [:ecto, :phoenix],
  plugins: [Phoenix.LiveView.HTMLFormatter],
  inputs: ["*.{heex,ex,exs}", "priv/*/seeds.exs", "{config,lib,test}/**/*.{heex,ex,exs}"],
  subdirectories: ["priv/*/migrations"]
]

# settings.json
 "[phoenix-heex]": {
        "editor.formatOnSave": true,
        "editor.defaultFormatter": "JakeBecker.elixir-ls"
    },

Is this expected? Is it something to implement on the vscode-elixir-ls level?

Environment

• Elixir & Erlang versions (elixir --version): Erlang/OTP 24, Elixir 1.13.4
• VSCode ElixirLS version: 0.9.0
• Operating System Version: macOS Monterey 12.1 (M1)

[benvp]

Just in case anybody wonders how to compile the current master, try this little snippet:

(Remember to change the version to the current VSCode extension version. Currently v0.11.0)

git clone --depth 1 --branch master https://github.com/elixir-lsp/elixir-ls.git ~/elixir_ls
cd ~/elixir_ls
mix deps.get
mix elixir_ls.release -o ~/.vscode/extensions/jakebecker.elixir-ls-0.11.0/elixir-ls-release/

[dvic]

https://github.com/elixir-lsp/elixir-ls/pull/690 just got merged… 🥳