Kotlin

Configuration Example

[project]
name      = "my-kotlin-app"
root      = "."
languages = ["kotlin"]

[resolve.java]
module_name = "com.example.myapp"

[[layers]]
name            = "domain"
paths           = ["src/domain/**"]
dependency_mode = "opt-in"
allow           = []
external_mode   = "opt-out"

[[layers]]
name            = "usecase"
paths           = ["src/usecase/**"]
dependency_mode = "opt-in"
allow           = ["domain"]
external_mode   = "opt-out"

[[layers]]
name            = "infrastructure"
paths           = ["src/infrastructure/**"]
dependency_mode = "opt-in"
allow           = ["domain"]
external_mode   = "opt-in"
external_allow  = ["kotlinx.coroutines"]

Difference from Java

Use languages = ["kotlin"], but import resolution shares the [resolve.java] section.

Import Classification

Import	Classification
import com.example.myapp.domain.User	Internal (starts with module_name)
import kotlinx.coroutines.launch	External
import java.util.UUID	External (stdlib)

Gradle Deep Layout

For deep Gradle layouts, use **/layer/** globs:

[[layers]]
name  = "domain"
paths = ["**/domain/**"]   # matches src/main/kotlin/com/example/domain/ too