and i also had to do this for mockito and scalatest:

jar_library(
  name='mockito',
  jars=[
    jar(org='org.mockito', name='mockito-core', rev='1.9.5'),
    jar(org='org.mockito', name='mockito-core', rev='1.9.5', classifier='test'),
  ],
)

and i could easily imagine adding a

classifiers

argument (or whatever is better named) to JarDependency so i can just do

classifiers=[None, 'test']

or something