Can I change the included packages easily?

[Nathan McCorkle]

I want to remove some packages from the build scripts, and also might need to change the version of python. I see the configuration files in the repo have repeated references to the same packages... rather than a package's info being grouped in a single section that's easily editable.

Can you tell me the method you'd recommend for commenting out or adding a package? (i.e. which files do I need to touch)

Thanks!