Or, conversely, you can disable `ruby-lsp` and enable `solargraph` and `rubocop` by adding the following to your `settings.json`:

```json
{
  "languages": {
    "Ruby": {
      "language_servers": ["solargraph", "rubocop", "!ruby-lsp", "..."]
    }
  }
}
```

## Setting up `solargraph`

Solargraph has formatting and diagnostics disabled by default. We can tell Zed to enable them by adding the following to your `settings.json`:

```json
{
  "lsp": {
    "solargraph": {
      "initialization_options": {
        "diagnostics": true,
        "formatting": true
      }
    }
  }
}
```

### Configuration

Solargraph reads its configuration from a file called `.solargraph.yml` in the root of your project. For more information about this file, see the [Solargraph configuration documentation](https://solargraph.org/guides/configuration).

## Setting up `ruby-lsp`

Ruby LSP uses pull-based diagnostics which Zed doesn't support yet. We can tell Zed to disable it by adding the following to your `settings.json`:

```json
{
  "languages": {
    "Ruby": {
      "language_servers": ["ruby-lsp", "!solargraph", "..."]
    }
  },
  "lsp": {
    "ruby-lsp": {
      "initialization_options": {
        "enabledFeatures": {
          // This disables diagnostics
          "diagnostics": false
        }
      }
    }
  }
}
```

LSP `settings` and `initialization_options` can also be project-specific. For example to use [standardrb/standard](https://github.com/standardrb/standard) as a formatter and linter for a particular project, add this to a `.zed/settings.json` inside your project repo:

```json
{
  "lsp": {
    "ruby-lsp": {
      "initialization_options": {
        "formatter": "standard",
        "linters": ["standard"]
      }
    }
  }
}
```

## Setting up `rubocop` LSP

Rubocop has unsafe autocorrection disabled by default. We can tell Zed to enable it by adding the following to your `settings.json`:

```json
{
  "languages": {
    "Ruby": {
      // Use ruby-lsp as the primary language server and rubocop as the secondary.
      "language_servers": ["ruby-lsp", "rubocop", "!solargraph", "..."]
    }
  },
  "lsp": {
    "rubocop": {
      "initialization_options": {
        "safeAutocorrect": false
      }
    },
    "ruby-lsp": {
      "initialization_options": {
        "enabledFeatures": {
          "diagnostics": false
        }
      }
    }
  }
}
```

## Using the Tailwind CSS Language Server with Ruby

It's possible to use the [Tailwind CSS Language Server](https://github.com/tailwindlabs/tailwindcss-intellisense/tree/HEAD/packages/tailwindcss-language-server#readme) in Ruby and ERB files.