some ppas are not updated, so if you rely on them you should wait.
There's a ppa for arm-gcc that I want to use (https://launchpad.net/gcc-arm-embedded) , but so far it's still on Ubuntu 13.04. How is it possible to try to make the ppa work on Ubuntu 14.04? What are the steps involved? Is there some way to find out how the ppa was made for Ubuntu 13.04 and recreate those steps on 14.04?