Issue

  • A module contains proto files emits the following error when it’s compiled with line-gradle-scripts grpc preset.

    $ ./gradlew clean :protocol:build

Type-safe dependency accessors is an incubating feature.
> Task :protocol:sourcesJar FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':protocol:sourcesJar'.
> Entry com/example/foo/FooOuterClass.java is a duplicate but no duplicate handling strategy has been set. Please refer to https://docs.gradle.org/7.4/dsl/org.gradle.api.tasks.Copy.html#org.gradle.api.tasks.Copy:duplicatesStrategy for details.

Cause

  • Files under gen-src/main/java gets registered twice as sourceSet once by line-gradle-scripts at java.gradle:L58 and again by protobuf-gradle-plugin.

Workaround

  1. Comment out java.gradle:L58
  2. Define Jar task duplicatesStrategy as follows: 

    tasks.withType<Jar> {
    duplicatesStrategy = DuplicatesStrategy.INCLUDE
}

GitHub

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