I just did a bit of pairing with @MagicRB, and we came up with this: feat: provide nvd and nix-diff view of facter changes by brianmcgee · Pull Request #68 · nix-community/nixos-facter-modules · GitHub
You can now get an nvd diff
or a nix-diff
between the system closure with and without facter enabled like this:
nix run .#nixosConfigurations.<hostname>.config.facter.debug.nvd
nix run .#nixosConfigurations.<hostname>.config.facter.debug.nix-diff