Docbuild and Merge Multiple Docc Catalogs

[ronnqvist (David Rönnqvist)]

I see. The feature preview post called out a couple of limitations with the DocC version that's in the current latest version of Xcode:

@ronnqvist

You can also use a Swift 6.0 toolchain but if you do, each target will get a separate navigation hierarchy and you won't have any landing page. You can still write links from targets to their dependencies and symbol relationships are still automatically turned into links. Note: the Swift 6.0 toolchain won't receive any further updates related to combined documentation.

I'm assuming that those issues (no landing page and no combined navigation) are the issues that you were encountering.