`--extra-search-dir` is specifically about giving the user the power to use their own version.  the idea is that it's supposed to find the first one in the search order, because that's the one they are telling us to use.

I don't understand why you can just find the first one like it used to and just install directly from that file path (like it used to).  you don't need to use `--find-links` and `--no-index`.