> > On another note, on my Mint 20 system, each start of the AppImage
> > rebuilds the plugin index, even though the file is in .bcast5.

Ah no, that is a different one. I am talking about rebuilding
file Cinelerra_plugins each time CinGG starts. Currently that takes >
2.5 minutes on my Mint 20.2 (which is why it has some priority for me),
on Manjaro it works fine: after first build, a new CinGG start does not
re-build that LV2 index it unless you tell it to.