Hi folks,

I've done some work on getting prusa-slicer 2.5.0 into Fedora, and the good news is that I have a set of package builds in a copr against rawhide that seem to work:

https://copr.fedorainfracloud.org/coprs/spot/prusa-slicer-2.5.0/

There are some caveats:

* Some of the prusa-slicer tests are segfaulting. I just disabled the tests for this build, but I know that is not ideal. At least one other upstream (nix) which has builds of 2.5.0 has simply disabled all of the libslic3r tests.
* I had to update tbb and opencascade
* openvdb is in the copr too, but there are no changes, it was just rebuilt for new deps

https://spot.fedorapeople.org/prusa-2.5.0/ has the SRPMs and SPECs.

Given how intrusive this is, I would appreciate other eyes reviewing this work.

Thanks,
~spot