Following up on this: the reason that the .install file needs to exist at all is that debian/rules is broken. It looks like dh_pycentral should be called, but it doesn't.
Fixing this will require someone to navigate the labarynthine logic of CDBS. Or at least check that the target that has the dh_pycentral call should actually be called by CDBS :).
Once someone has figured this out, a bug should be filed in the Debian BTS.
Following up on this: the reason that the .install file needs to exist at all is that debian/rules is broken. It looks like dh_pycentral should be called, but it doesn't.
Fixing this will require someone to navigate the labarynthine logic of CDBS. Or at least check that the target that has the dh_pycentral call should actually be called by CDBS :).
Once someone has figured this out, a bug should be filed in the Debian BTS.