Question: Classifier-Support

[MarcDahlem]

Hi Ben-Manes,

is there a support for classifiers?

We have some internal libraries which are published only via classifier.
Their versions do not update correctly during the dU-task.

Furthermore, is there a possibility to get the extension provided by the dependency (e.g. '@zip').

Thanks & BR

[ben-manes]

We script Gradle so the behavior should conform to what their APIs provide. There isn't any logic around classifiers in the plugin, and I don't see it or extensions exposed by many of the dependency apis (e.g. resolution rules). So I don't think Gradle offers a lot of visibility during resolution.

The plugin is effectively resolving with,

project.dependencies.create("${dependency.group}:${dependency.name}:+") {
    transitive = false
}

which means it does not capture your classifier. The ExternalDependency doesn't provide that level of detail for us to include.

You might need to ask the Gradle team. If there is an enhancement we can add it, but I'm not sure about what we'd do here.

[vanniktech]

@MarcDahlem has the question been answered?

[MarcDahlem]

Oh sry, I did not find the time to llok into your code. I wanted to test + submit pull request if the following works:

Instead of

project.dependencies.create("${dependency.group}:${dependency.name}:+") {
transitive = false
}

we could use propably

project.dependencies.create("${dependency.group}:${dependency.name}:+:${dependency.classifier}@${dependency.ext}") {
transitive = false
}

Of course, the classifier and ext should only be added if they exist in the dependency (dependency.classifier != null or so).

[ben-manes]

@MarcDahlem the classifier and extension are not part of the ExternalDependency api. I don't know how we can query for them.

[ben-manes]

Oh, it's in the artifact.

dependencies.create("a:b:+:test@jar").artifacts.each { art ->
  println "${art.extension} - ${art.classifier}"
}