Windows and Mac target platforms not selectable

I have the Mac and Windows Build support modules added. It seems to download each time I click on “done”, but oddly enough it doesn’t say “installed”.

Clicking on done:
6732232--774994--upload_2021-1-16_15-2-3.png

Afterwards it seems to indicate that the mac/windows support is still not installed, because it would show up here, right?
6732232--774991--upload_2021-1-16_14-57-30.png

Still not showing up as option:

So what’s going on here? Why is Mac and Windows support not being installed?

Ok well, the Hub is just incredibly useless. Doesn’t give any information IF the installation worked/failed, nor does it tell you why it’s failing. After using Unity for 9 years it’s really sad to see that Linux is still so badly supported - even UI scaling isn’t available (but it is on windows)…

You can find the actual logs with USEFUL information here:
~> cat ~/.config/UnityHub/logs/info-log.json

Turns out cpio is required (and of course there isn’t any warning/notice about that), so you can just yay -S cpio that and it works afterwards.