Hello, maybe I do not know where to search but I wanted to check out the reqs of various versions of Unity but what I can only see is the last version: https://unity3d.com/unity/system-requirements Is it possible to get the requiremnents on other releases, such as 2017 or patches like 2017.2.2p3? Thanks.
System requirements really don't change quickly. I'd be pretty sure that https://unity3d.com/unity/system-requirements is valid for older releases.
They absolutely do change. 2018.1 supports OSX 10.9 minimum and 2018.2 supports OSX 10.11 for example. If you're lucky you can find the system requirements on the way back machine here. https://web.archive.org/web/20180701000000*/https://unity3d.com/unity/system-requirements But other wise you're SOL because Unity doesn't seem to care enough to keep track of this for their users.
The most logical place to put that information would be in the manual, since manuals are maintained by version. Unfortunately that's not the case.