Is it possible to specify variant as part of depends_lib?

[Edward Maros]

I have a package (gds) that has a build requirement on port root5 with
the variant +python27.

Currently the buildbot system will not build the gds package because it
installs the root5 package with only default variants.

Any ideas on how to get the variant passed (at least for the buildbot
system) so I can address any issues related to the gds package?

Thank you,

Edward