kotlin {
  setUpMyTargets()

  targets.configureEach {
    if(this is KotlinNativeTarget) {
      if(konanTarget.family.isAppleFamily) {
        binaries.framework {
          export(project(":my-project"))
        }
      }
    }
  }

org.gradle.api.internal.AbstractMutationGuard$IllegalMutationException: Project#afterEvaluate(Action) on project ':engine' cannot be executed in the current context.
	at org.gradle.api.internal.AbstractMutationGuard.createIllegalStateException(AbstractMutationGuard.java:39)
	at org.gradle.api.internal.AbstractMutationGuard.assertMutationAllowed(AbstractMutationGuard.java:34)
	at org.gradle.api.internal.project.DefaultProject.assertMutatingMethodAllowed(DefaultProject.java:1444)
	at org.gradle.api.internal.project.DefaultProject.afterEvaluate(DefaultProject.java:1048)
	at org.jetbrains.kotlin.gradle.plugin.KotlinNativeTargetConfigurator.createFrameworkArtifact$configureConfiguration(KotlinNativeTargetConfigurator.kt:83)

withType