nixpkgs

d8df53cc - nixos: include nixpkgs-unstable release-critical jobs in nixos-unstable

nixos: include nixpkgs-unstable release-critical jobs in nixos-unstable Previously, the `unstable` attribute was explicitly removed since 2013 (commit 5c1f8cbc70cd) to avoid potential redundancy. However, including it ensures that packages that block nixpkgs-unstable also block nixos-unstable.