20.09 Critical changes

If you have changes that “need” to be in 20.09, and the release should be blocked because of it, please add the related issue or PR to the new 20.09 Blocker project. https://github.com/NixOS/nixpkgs/issues/95269

If you want to have a discussion whether or not an item should be a release blocker, please use this issue: https://github.com/NixOS/nixpkgs/issues/95269

copied from issue:

“There’s already a 20.09 milestone, why another project?”
The milestone has many “nice-to-haves” which have been carried over from previous releases, and does not represent a true blocker for a given release. I’ll try to address the items in the 20.09 milestone, but I won’t consider them as blockers, and able to be carried over to the 21.03 release if time doesn’t permit them to be resolved.