Custom `dot-formatter` location isn't respected by extension

[kieraneglin]

Is this the right repo?

This is specifically a request for this repo

Environment

• Elixir & Erlang versions (elixir --version): Erlang/OTP 26 [erts-14.2.5] [source] [64-bit] [smp:10:10] [ds:10:10:10] [async-threads:1] [jit] Elixir 1.17.0 (compiled with Erlang/OTP 25)
• VSCode ElixirLS version: 0.22.0
• Operating System Version: darwin 23.5.0

Troubleshooting

• [x] Restart your editor (which will restart ElixirLS) sometimes fixes issues
• [x] Stop your editor, remove the entire .elixir_ls directory, then restart your editor

Setup

• Move .formatter.exs into a directory like tooling/.formatter.exs
• Update your mix aliases to overwrite mix format like:

defp aliases do [ format: "format --dot-formatter=tooling/.formatter.exs",

...

] end

- Attempt to format a file via the extension

### Expected behaviour

`--dot-formatter` argument is respected (or, if not respected, is configurable)

### Actual behaviour

`--dot-formatter` argument is not respected or configurable

### Spitballing

I'm not sure if this is possible, but it'd rule if you could specify the exact formatting command to run in your VS Code settings and the [format task](https://github.com/elixir-lsp/vscode-elixir-ls/blob/160e08a0ff7365ea21d91bff9e0ebf62cb50bbfc/src/taskProvider.ts#L187) would use that command instead. The default value would be `mix format`

[lukaszsamson]

ElixirLS handler for LSP textDocument/formatting does not run the mix task. It calls formatter APIs directly. If you need changing path I suggest opening an issue in elixir so dot-formatter path setting can be read from mix project.

Alternatively stick to using a custom VSCode task