Add Greek language at calculate linux?

Hello to everybody.I have 2 questions.
1)How can i add Greek language at calculate linux?
2) is it on plans of the distro-makers to add it when install it?
Thanks for your time

At first you need to add L10N="en el" into /etc/portage/make.conf/custom and runcl-update. Emerge will rebuild many packages for support Greek localization.

What is distro do you use?