I’ve been pretty involved in open source projects most of my career. The license you choose should reflect the community you are trying to create. But it probab

I’ve been pretty involved in open source projects most of my career. The license you choose should reflect the community you are trying to create. But it probably only makes sense to protect application level code with a copyleft license. Most code has no real value beyond the time it saves you and its software developer contributors so it should be as liberally licensed as possible. You want to encourage contributions from the widest possible user base which includes developers of closed source software. They are already incentivised into upstreaming their changes to you on a liberal basis.