All,
I created an example of how to build OvmfPkg using the Pytools build environment ( https://github.com/tianocore/edk2-pytool-extensions ).
It is available for your feedback on GitHub:
https://github.com/out0xb2/edk2/pull/3/files

Looking for your thoughts on integrating this example into EDK2.

Thanks,
Jeremiah Cox