maven-publish produces jar with source files not class files when multiple source dirs and workaround for fake duplicates

[carstenSpraener]

Expected Behavior

When publishing with maven-publish the produced jar file should contain the compiled class files.

Current Behavior

The published jar file contains the sources not the class files.

Context (optional)

---

Gradle 8.1.1

Build time: 2023-04-21 12:31:26 UTC
Revision: 1cf537a

Kotlin: 1.8.10
Groovy: 3.0.15
Ant: Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM: 17.0.4.1 (Eclipse Adoptium 17.0.4.1+1)
OS: Mac OS X 13.3.1 x86_64

Steps to Reproduce

Create a project with the following build.gradle

plugins {
    id 'java-library'
    id 'maven-publish'
}
group = 'my.group'
version = '0.0.1-SNAPSHOT'
sourceSets {
    src{
        main {
            java {
                srcDir('src/main/java')
                srcDir('src/main/java-gen')
            }
        }
    }
}
// WORKAROUND! If you comment this out gradle will report false duplicates
task sourcesJar(type: Jar) {
    duplicatesStrategy = 'exclude'
    from sourceSets.main.allSource
}
java {
    withJavadocJar()
    withSourcesJar()
}
publishing {
    publications {
        sonatype(MavenPublication) {
            from components.java
         }
    }
    repositories {
        maven {
            name = 'local'
            url="${project.rootDir}/repo"
        }
    }
}

Create a java File und src/main/java like:

public class Main {
}

You can leave the source folder src/main/java-gen empty.
Start publishing with:

gradle publishSonatypePublicationToLocalRepository

List the content of published jar file:

❯ jar -tf repo/my/group/PublishError/0.0.1-SNAPSHOT/PublishError-0.0.1-*-1.jar
META-INF/
META-INF/MANIFEST.MF
Main.java

Gradle version

8.1.1

Build scan URL (optional)

No response

Your Environment (optional)

---

Gradle 8.1.1

Build time: 2023-04-21 12:31:26 UTC
Revision: 1cf537a

Kotlin: 1.8.10
Groovy: 3.0.15
Ant: Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM: 17.0.4.1 (Eclipse Adoptium 17.0.4.1+1)
OS: Mac OS X 13.3.1 x86_64

[carstenSpraener]

Seems this bug is related to

#17236

I can't publish at the moment.

[remal]

@carstenSpraener

First of all, your Gradle script looks a bit strange:

sourceSets {
    src{ // <-- What is it for? Are you defining `src` source set?
        main {
            java {
                srcDir('src/main/java')
                srcDir('src/main/java-gen')
            }
        }
    }
}

I suppose the issue is that you add a dir that is already added: src/main/java. By default, this dir is already presented in the main source set. So, the fix, I suppose, is to remove srcDir('src/main/java') line.

[carstenSpraener]

Yepp! That's it. Many thanks. Puh! Took me nearly a day of frustration. Gradle is great again.

(By the way... maybe the srcDirs should be a set, so that double entries do not bother)

[eskatos]

Thank you for your interest in Gradle!

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Good you sorted it out!