Update hello-world.mdx

[waldmatias]

Updated sdk to 20.0.0
Updated soroban-cli to 20.0.1

[ElliotFriend]

This is a bit of a tricky one, perhaps. Futurenet requires v20.0.1, but Testnet (I'm pretty sure) will only work with v20.0.0-rc2.2 until it resets on the 18th... I even started #671 to make sure we're compatible with Testnet (not yet merge, tho).

Not sure which direction we should go. I'd hate to add notes everywhere that say "use version x for futurenet and version y for testnet." That lends itself to forgetting to update/remove them when the time comes. I don't really want to just ignore one or the other, either... 🤔

Any thoughts or suggestions?

[ElliotFriend]

I think we have tended to generally favor testnet as the "default" or "typical" network in the docs up to this point, though. So, maybe we try to stick to that?? Doesn't feel like a great answer, to be honest hehehe

[waldmatias]

Well ... if something is breaking today between futurenet and testnet that results in a dev needing to use different sdk versions, that should be documented (so you can keep the 'default' as applying to testnet requirements, but there should be a note below that says 'if you are using futurenet, you'll need to switch to using v.XXX'). I mean, I know it is hard to sync, but reading the docs is what you should be doing first, right? 😆 How would I know which sdk I need to use for different networks, and in that sense, it is most likely that if I'm reading a "hello world" I would actualy might end up deploying first to futurenet, no?
But then again, the next step is called deploy to testnet, so perhaps futurenet is out.

Do we want everyone deploying to testnet and not futurenet?

[ElliotFriend]

Do we want everyone deploying to testnet and not futurenet?

Generally speaking, that's the direction the docs lean. I don't think it's really spelled out clearly anywhere, but there are certain pros/cons to each. It seems that Testnet is preferred, and how (or if) futurenet is used in the future is a bit up-in-the air at this point.

I think since we're typically using Testnet in the docs, it makes sense to leave the rc versions of the SDKs for now? Maybe anywhere that specifically uses Futurenet (dapps challenges maybe?) we should add a note to change SDK versions for now?

[waldmatias]

Given we're theoretically just waiting for a reset on the 18th (and everything should sync up, both sdk and cli) then I guess it is fine to leave rc versions. In any case, we've left some insight in these comments for anyone having a problem until then with versioning 😄

[ElliotFriend]

@waldmatias Looks like this is officially unnecessary now lol. Thanks for the contribution and insightful conversation!