I am using Chocolatey to make installers for a bunch of different tools, but the versions I need for some of these tools are considered outdated and are not available as packages on the Chocolatey package repository. What should I do?
If you are part of an organization, I (and Chocolatey.org) recommend setting up your own Chocolatey feed and building your own packages for internal use. This way, you control the package versions and their sources. Another benefit is that you can host the source internally or embed any installation files in the installer without worrying about distribution rights (as long as the feed is only available internally).
Unfortunately, you can't squeeze blood from a stone. Many packages in the public Chocolatey feed are "unofficial" from the software's point of view (as in, not maintained by the vendor) and as such it's tough to rely on the public feed. If you can't get the package maintainer to update the package, and you don't want to maintain your own feed, then as long as you can commit to keeping the package up to date for the community then consider creating your own community package to maintain.