we currently consume xbase.lib and xtend.lib at runtime from them.
(re)package it on our update site
get rid of the dependencies at runtime (needs to be checked if it is used in impl only or in api too). i also wonder how we can test this (xtend/xbase lib api not used at runtime). we also need to find out how to remove it from the manifest
Xtext plans to leave eclipse simrel https://github.com/eclipse/xtext/issues/1961
we currently consume xbase.lib and xtend.lib at runtime from them.