Comment # 23 on bug 4532 from Dominic Robinson

I don't see any problem with that per say , but I know for a fact that this can
only be built against kodi >= 17; for future versions sure.

So to clear up my limited understanding of koji, how would this work exactly?
If a koji_version macro were to be defined in the kodi-devel package, how would
that get passed to this package?

Is it a case of:
- Dependent packages are being built in a single chroot a la mock chain.
- Therefore once koji_version is set, it is exported before all subsequent
builds within that chroot.