I tried to get kexi in calligra from project-neon, following https://userbase.kde.org/Calligra/Download#Ubuntu (I run Mint17KDE) but I received
E: Le paquet « project-neon-calligra » n'a pas de version susceptible d'être installée
(indeed Synaptic doesn't show the package « project-neon-calligra »)

Has someone an idea about that ?

Thanks

Are other Neon packages still available? Also, which repository URLs are you using?

thanks for the inquiry

In my synaptic
There is about 160 «project-neon-*» packages available through
deb http://ppa.launchpad.net/neon/ppa/ubuntu trusty main
deb-src http://ppa.launchpad.net/neon/ppa/ubuntu trusty main

Do you need the list ?

That should be fine. It would seem that project-neon-calligra isn't built for Ubuntu Trusty (14.04.1).
I'll enquire as to why this is the case.

I've spoken to one of the folks that runs the Neon PPA. Apparently it is maintained only for the latest version (which would be 14.10) so the packages won't be available i'm afraid.