NOTE: I don’t intend this to be a discussion of whether SSPL is open source or not. If you want to discuss that, go add your voice to the discussion at OSI.
The version of MongoDB in homebrew was recently reverted to a version that predates the change to Mongo’s new Server Side Public License. While the approval process for the new license is hashed out by the Open Source Initiative and other places, the status of these new versions of mongodb are basically indeterminate as to whether the code is open source or not. Therefore, reverting to the last known version using an OSI/FSF approved license is the correct choice. For those that want to follow the revision and review process, here is a link to OSI’s blog: https://opensource.org/LicenseReview122018
For those that don’t want to visit that link, the pertinent part is: “SSPLv2: discussion will continue on the revised version.”
In the mean time, the latest version should live in a separate tap maintained by mongo on their github. Or barring that, I can host it on my github org until the licensing issue is settled. The question I have for the maintainers and other users is: can a comment be added to the homebrew formula pointing out the location of where a tap for the package is located once the tap is setup?