We use many variants of Indian Keyboards - Devanagari Inscript (Default Indian), Hindi WX, Malayalam Inscript etc. In earlier Ubuntu versions, we could easily add these keyboards through the System Settings GUI dialogues. In recent 16.04 and 17.04, we could see default Indian (and Urdu) only. How to add other variants?
Do any package need to be installed? We searched the package repository but could not find any separate package describing these variants.
We suppose it needs additional configuration. It might be silly, but don't know how to.
We use multiple distros - Ubuntu 16.04.2, 17.04, Arch Xfce, Fedora 25 Xfce etc. and we could not solve in all those distros. If we could make it in one distro, it must be similar in others.