The next step is to fix this defect
Personally I’m not an expert neither of Arch Linux nor of manjaro, as eggs I come from Debian and, as penguin I’m omnivorous, so there is hope!
Despite the invaluable help of Stefano, I can’t say that all the problems of adapting eggs to manjaro have been solved, in particular I’m sorry for the need to mount the CD and to create the link.
I think this problem - better described above - comes from the fact that I used an old library to have squashfs, library that I adapted to have a rw configuration with overlay. I think all this can be done with miso, but at the moment I don’t know how to use it.
For example in the original manjaro installation iso, it is possible to find cd in /run/miso/ at this point I can just edit the unpackfs module of calamares and set:
source: /run/miso/live/filesystem.squashfs
Someone experienced in the subject would be of great help, even if only with a suggestion, directions, etc.
Thanks