It kinda confuses me that there’s darwin included in a release of the NixOS?
Like 20.09 is a version for NixOS. So I’m not sure, have we ever blocked on darwin issues?
I opened an issue on GitHub with the cause gegl_0_4 fails to build on darwin blocking the gimp test in nixpkgs-20.09-darwin · Issue #99108 · NixOS/nixpkgs · GitHub