Ah, I forgot capnproto doesn't let you edit a serialized proto in-memory, it's read-only. In theory this should be possible as long as you're not changing the length of anything, but I'm not surprised such trickery is unsupported.
So this doesn't seem like a versatile solution for sharing data structs between two Python processes. You're gonna have to reserialize the whole thing if one side wants to edit, which is basically copying.
So this doesn't seem like a versatile solution for sharing data structs between two Python processes. You're gonna have to reserialize the whole thing if one side wants to edit, which is basically copying.