`depends` can't combine minimum version with main branch

[rsmmr]

I'd like to express a dependency on another package that says "need at least version x.y", but includes the main/master branch into that. I don't think we can express that right now: depends >=1.1 rejects main, and we don't have a way to say or for two version specifications (i.e, depends >=1.1,branch=main would require having both satisfied).