This is amazing! Can a program call across versions? Like could we take a Lua 5.1 codebase and upgrade only a portion of it at a time to a new Lua version?
I think where it would be most helpful is converting a codebase and being able to easily run tests to ensure behavior is the same.
I created a github gist https://gist.github.com/ianm199/5ba0366376eca673142e1f0c79b4... that explains what is practical (I used AI for this to be clear feel free to skim).
Do you have a use case in mind? Would love to chat or take a look at an github issue if you create one.
> Do you have a use case in mind?
Two, 1) upgrading Lua code on a module by module basis 2) Using a newer library on an older codebase. I know those are really two takes on the same problem. I understand why your system doesn't, but at least yours is more flexible than mlua.
I understand why this hard and why it just doesn't work like this out of the box. Lua minor versions are really major and the semantics really does change.
I also don't think what I am asking for is all that necessary, more of a cute language and runtime flex. If the Lua total addressable market was 100x what it is with lots of code on older versions that needed to run side by side then maybe.