I would like to install the beta of Firefox 4 in lucid or maverick. I know I can install the ubuntu-mozilla-daily PPA (ppa:ubuntu-mozilla-daily/ppa) and have easy apt-get access to firefox-4.0. However, this repository contains not only Firefox, but also daily builds of Thunderbird and other mozilla products.
If I leave this PPA enabled, apt-get upgrade also upgrades Thunderbird 3 to the latest "shredder". I'm not interested in running a daily build of Thunderbird -- I just want Firefox 4.
Is there some combination of pinning, backporting, or something like that which would make it easy for me to run an up-to-date daily of Firefox 4, but only Firefox 4?
If you just want the beta, I suggest ppa:mozillateam/firefox-next which has the latest beta, but not the latest nightly.
If you want the latest nightly, you could set up a cron job that pulls the latest nightly from nightly.mozilla.org and installs it in /usr/local. I can try to help if you need help.
Just my suggestions. (I've been using the firefox-next ppa for a while now.)