[yocto] Relicensing an Apache-licensed recipe as MIT

[Martin Kelly]

Hi,

I'm thinking about integrating the open-vm-tools recipe from 
openswitch[1] into openembedded (it massively improves the performance 
of VMWare guests) but first I have a question about licensing. The 
openswitch repository is Apache-licensed while the openembedded layers 
are all MIT licensed. I'm not a lawyer, but my understanding is that the 
Apache license is a superset of the MIT license (it includes a patent 
clause that the MIT license lacks), and therefore MIT code can be 
relicensed as Apache but not the other way around. If that's the case, 
then there's two options here:

(1) - Include this recipe in openembedded with an Apache license, while 
the rest of the recipes are MIT-licensed. This sounds complicated, 
messy, and probably not feasible.

(2) - Ask openswitch for permission to relicense that one recipe as MIT 
with attributions.

I'm wondering if someone with a better understanding than I have could 
provide me me advice about the best way to proceed.

Thanks,
Martin

[1]: 
https://github.com/open-switch/ops-build/tree/master/yocto/openswitch/meta-foss-openswitch/recipes-extended/open-vm-tools