When I try to convert a project from maven/sbt to Gradle:

https://github.com/tek/splain/blob/nexusRelease/Dev1/build.gradle.kts

I found a few problems, when comparing the new published pom file (by gradle):

...
  <modelVersion>4.0.0</modelVersion>
  <groupId>io.tryp</groupId>
  <artifactId>splain_2.13.6</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <dependencies>
    <dependency>
      <groupId>org.scala-lang</groupId>
      <artifactId>scala-compiler</artifactId>
      <version>2.13.6</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>org.scala-lang</groupId>
      <artifactId>scala-library</artifactId>
      <version>2.13.6</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>io.tryp</groupId>
      <artifactId>splain_2.13.6</artifactId>
      <version>1.0.0-SNAPSHOT</version>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
  </dependencies>
</project>

with the old one (by sbt):

...
    <dependencies>
        <dependency>
            <groupId>org.scala-lang</groupId>
            <artifactId>scala-compiler</artifactId>
            <version>2.13.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.scala-lang</groupId>
            <artifactId>scala-library</artifactId>
            <version>2.13.5</version>
        </dependency>
        <dependency>
            <groupId>com.chuusai</groupId>
            <artifactId>shapeless_2.13</artifactId>
            <version>2.3.3</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>dev.zio</groupId>
            <artifactId>zio_2.13</artifactId>
            <version>1.0.4</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.specs2</groupId>
            <artifactId>specs2-core_2.13</artifactId>
            <version>4.5.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

The pom file generated by gradle has a self-referential dependency to itself. This has caused nexus publishing to fail the sanity check. My questions are:

1. should this be illegal? Why is gradle permitting this?

2. why was it generated?

Gradle has a few other problems (like the deprecation of the provided scope) but so far this is the most serious of them all.

CodePudding user response：

Fixed, turns out the problem was caused by "java-test-fixtures" plugin.

Test fixture doesn't have a maven scope counterpart, so by default their dependencies are merged into compile scope dependencies when publishing. The problem disappeared once I disabled their publishing:

                val javaComponent = components["java"] as AdhocComponentWithVariants
                from(javaComponent)

                javaComponent.withVariantsFromConfiguration(configurations["testFixturesApiElements"]) { skip() }
                javaComponent.withVariantsFromConfiguration(configurations["testFixturesRuntimeElements"]) { skip() }