I have read many documents about flatpak, including them on
https://docs.flatpak.org/en/latest/
but found no answer to my question:
Is flatpak suitable for packaging many (Perl) scripts into one package?
The problem I want to solve is:
I have written about 100 CLI programs in Perl und bash:
https://fex.belwue.de/fstools/
https://fex.belwue.de/FAQ/user.html#What_are_all_those_UNIX_clients_for
Some Linux distributions have either no Perl at all or a broken Perl
version (buggy SSL/TLS, etc).
My idea now is to put everything in a flatpak package including a complete
Perl runtime with all necessary libraries.
I think this is possible 
BUT… how can a user access them easily?
Do they have to install starter scripts for every program, like:
fexsend:
exec flatpak run com.fex.fexsend “$@”
fexget:
exec flatpak run com.fex.fexget “$@”
xx:
exec flatpak run com.fex.xx “$@”
xxx:
exec flatpak run com.fex.xxx “$@”
…
Maybe I have missed something essential or missunderstood the basic
concecpt of flatpak?