1. Clone `elixir-ls` and set it to version [v0.12.0](https://github.com/elixir-lsp/elixir-ls/blob/master/CHANGELOG.md#v0120-7-november-2022) 2. Set up `neovim` to check `elixir` current elixir version and use the appropriate `elixir-ls` Reviewed-on: #15