If you're running a linux distro that requires compiling packages from source (Gentoo comes to mind), then you could conceivably be compiling a lot of things often.
Eh, that sort of thing was already reasonable a few years ago and open source software hasn't really gotten much bigger since then. Some projects have actually gotten smaller. (Browsers are the glaring exception. I don't envy anyone building their own firefox or chromium these days..)