Make offline builds (relatively) easy

[auscompgeek]

Imagine a build service that doesn't allow network access.

This would make it easy for me to build packages for various distros.

[virtuald]

You can pass the location of the cache directory to build_dl

[auscompgeek]

Right, sure. But I'd also have to figure out what to download beforehand.

[virtuald]

build_dl will do that.