I was able to get a functional Swift 5.5.3 toolchain for ARMv5.
You're just knocking out all these compile patches left and right aren't you?
@hggz what can I say, I really want Swift on OpenWRT routers and my iMac G4.
Here is a downloadable toolchain for Debian 11 (arm64)
That‘s great news! I hope the patches can make it into upstream.