The Shrinkrap API provided by the arquillian-osgi-bundle has a dependency on TCCL

See AbstractOSGiContainer

public Bundle installBundle(Archive<?> archive) throws BundleException
{
InputStream inputStream;

ClassLoader ctxLoader = Thread.currentThread().getContextClassLoader();
try

{ // Read the archive in the context of the arquillian-osgi-bundle Thread.currentThread().setContextClassLoader(getClass().getClassLoader()); ZipExporter exporter = archive.as(ZipExporter.class); ByteArrayOutputStream baos = new ByteArrayOutputStream(); exporter.exportZip(baos); inputStream = new ByteArrayInputStream(baos.toByteArray()); }

finally

{ Thread.currentThread().setContextClassLoader(ctxLoader); }

return context.installBundle(archive.getName(), inputStream);
}

As long as this internal code needs to set the TCCL, user code that works on the Archive will also need to do that.

The likely resolution is, to remove TCCL dependency iin shrinkwrap.