This is currently not supported. In a sense, each package is an βoptionβ that you enable through the package system itself. Your best bet is to simply publish packages for each part, and possibly add packages for common build combinations.
Twitter Bootstrap is currently doing something similar:
twbs:bootstrap
In addition, some of the (pre) packaged stylus packages:
stolinski:stylus-multi cryptoquick:stylus-multi mquandalle:stylus
I hope this answer is obsolete.
Jesse source share