Zed settings for ruby and elixir

settings.json

// Zed settings
//
// For information on how to configure Zed, see the Zed
// documentation: https://zed.dev/docs/configuring-zed
//
// To see all of Zed's default settings without changing your
// custom settings, run the `open default settings` command
// from the command palette or from `Zed` application menu.
{
  "assistant": {
    "default_model": {
      "provider": "zed.dev",
      "model": "claude-3-7-sonnet-latest"
    },
    "version": "2"
  },
  "vim_mode": true,
  "theme": "Gruvbox Dark",
  "telemetry": {
    "diagnostics": false,
    "metrics": false
  },
  "buffer_font_size": 15,
  "lsp": {
    "biome": {
      "settings": {
        "require_config_file": true
      }
    }
  },
  "languages": {
    "Ruby": {
      "language_servers": ["ruby-lsp", "!solargraph", "!rubocop", "..."],
      "format_on_save": {
        "external": {
          "command": "rubyfmt",
          "arguments": [],
          "stdin": true
        }
      }
    },
    "Elixir": {
      "format_on_save": {
        "external": {
          "command": "mix",
          "arguments": ["format", "--stdin-filename", "{buffer_path}", "-"]
        }
      }
    }
  }
}

config path: ~/.config/zed/settings.json

Gemfile:

group :development do
  gem "ruby-lsp"
end

Install Rubyfmt

brew install rubyfmt