I want to grab nginx 0.8.x but I realize that 0.7 is in Lenny-backports. How can I "safely" install it so that maybe in the future if I decide to download a newer release from aptitude, it doesn't mess up?
If there's a package for 0.8.x somewhere, then you can try grabbing the source package and building it. With an appropriate
It looks like even sid is on 0.7.x, though, but this person has a guide to building a package from 0.8.x in Ubuntu which should work the same way on Lenny as long as the required libraries are installed.
If you can't find a package pre-built for your distribution then building the package from source is the best way to be sure that the package is compatible with the libraries on your system.