Does anyone know what the deal w/ Swift 5.9 on Fedora is?

Prodding around the sources, I noticed that the package’s Swift version was bumped several months ago, but with failing builds.

The failing builds seem to be on aarch64 for some Fedora versions:

All of the extant builds are old enough that their logs and other artifacts are no longer available.
This includes the releng rebuild about 2 weeks ago, which still failed at ARM.

Does anyone know what’s going on with this…?

To see open bugs against this package, visit Bug List. You will see a couple of open bugs there where conversation about this issue is taking place.