I like the idea of putting it in one file but not an executable file. Using CBOR (MessagePack has a 4gb bytestring limit) and providing a small utility to copy

I like the idea of putting it in one file but not an executable file. Using CBOR (MessagePack has a 4gb bytestring limit) and providing a small utility to copy the executable portion and run it would be a win. No 4gb limit. It could use delta updates.