[mindslight]

Licensing as "open source" wouldn't be illegal, but the act of exporting would be. I've certainly seen libre software downloads that have click-throughs where you attest you're not in certain prohibited countries, IP blocks (eg Github does this site-wide AFAIK), etc. No idea if this will continue to be "enough" under this new fascist regime that doesn't care much for institutions like the rule of law. Probably fine up until it isn't, at which point ceasing and desisting would probably be enough unless you're deemed "woke" or some other kind of unperson.

(I'm not a member of any guilds. And I guess the downvote is for the political incorrectness. Plus ça change)