installation on OS X 10.14 beta

[Manav Bhatia]

Hi, 

 I am wondering if it is possible for MacPorts to install packages from 
prebuilt binaries on 10.14 beta. Is it possible force this? Maybe there is a 
way to tell MacPorts to assume 10.13 even though it is running on 10.14? 

Thanks,
Manav