When creating path objects using the dependencies task it is not possible to filter out artifacts by type.

If you reference an object of type pom and pull its dependencies into a path object, the resulting path will contain the pom files which java then presumes to be malformed zip files.

If you use type="jar" then it will not resolve the dependencies of the pom artifact at all, so you need to have type="jar,pom" to get the dependencies of the packaging pom artifact.

What is needed is a separate pathType attribute to allow retrieving the full set of dependencies into the fileset, while selecting a subset for the path object.