"yum-pull and it's sub-scripts allowed me to quickly setup a Fedora Core mirror on our internal network. This internal mirror allows me to have a streamlined build process for our products. Previously there was a tedious task of having to figure our package installation order and dependency issues when we need to do a platform migration from one version of a distro to another. Now I can simply provide yum with a short list of key packages and allow it to work out the dependencies for me. All served from a local repository. It's saved me weeks of work."