Using standard library modules in packages

Hello, as result of the stlib excision effort, packages that now (Julia 1.11 ??) want to import a module from the standard library, they need to declare the corresponding package in their Project.toml, right?

Yes.

And technically they should have been doing that all along…

That’s been the case for a while now. And a couple of years ago they started requiring you to specify a separate version number for stdlib dependencies, too: PSA: Compat requirements in the General registry are changing