RFE: If library is in a `site-package` patch the `RPATH` to point to the installed file

[LecrisUT]

Assuming that the packages are well packaged and tested between build-system.requires and dependencies, it would be more efficient to have the RPATH point to the original files that contain the library rather than create a copy of those as well. I will open equivalent issues in auditwheel and delocate for this feature

[jvolkman]

I don't think this tool as currently written has a role here. All of the relevant logic lives in auditwheel and/or delocate.