Kotlin

Kotlin language support in Zed is provided by the community-maintained Kotlin extension. Report issues to: https://github.com/zed-extensions/kotlin/issues

• Tree-sitter: fwcd/tree-sitter-kotlin
• Language Server: fwcd/kotlin-language-server

Configuration

Workspace configuration options can be passed to the language server via lsp settings in settings.json.

The full list of lsp settings can be found here under class Configuration and initialization_options under class InitializationOptions.

JVM Target

The following example changes the JVM target from default (which is 1.8) to 17:

{
  "lsp": {
    "kotlin-language-server": {
      "settings": {
        "compiler": {
          "jvm": {
            "target": "17"
          }
        }
      }
    }
  }
}

JAVA_HOME

To use a specific java installation, just specify the JAVA_HOME environment variable with:

{
  "lsp": {
    "kotlin-language-server": {
      "binary": {
        "env": {
          "JAVA_HOME": "/Users/whatever/Applications/Work/Android Studio.app/Contents/jbr/Contents/Home"
        }
      }
    }
  }
}