Packaging software is something that takes work
Part of the work of packaging software is in identifying and collecting all of its dependencies, in the right version, and making sure that the versions are all coherent with the rest of the system. Some of it is in testing the resulting whole system. A certain amount of it is in making a particular piece of software conform to the standards you've set up for a particular environment or distribution; for example, Debian has a specific scheme for how Apache is configured, and the general idea is used by Debian for a bunch of other software. Sometimes you fix bugs or pull in as yet unreleased changes.