Gradle: How to exclude a particular package from a jar?

Question

We have a package that is related to some requirements that were removed, but we don\'t want to necessarily delete the code because there\'s a possibility it will be needed

Answer 1

In 2018:

You may also use a closure or Spec to specify which files to include or exclude. The closure or Spec is passed a FileTreeElement, and must return a boolean value.

jar {
  exclude {
    FileSystems.getDefault()
      .getPathMatcher("glob:com/ourcompany/someotherpackage/polling/**")
      .matches(it.file.toPath())
  }
}

See Jar.exclude, FileTreeElement and Finding Files.