Thanks for the clear and comprehensive write-up.

It took a very similar set of steps to migrate a WSL (Windows Subsystem for Linux) Debian 10 install over to Beowulf. As I recall the other necessary step was to change a link to init to point at sysv's init, rather than the 'special' version that I think came with WSL. Amazingly, more or less everything else worked right away after the upgrade.

Rehabilitating WSL is a decidedly niche interest, but it's great for those of us who like a 'proper' shell and all the Linux goodies on a work-mandated Windows machine.