The local code search related content under https://nix.dev/tutorials/packaging-existing-software#search-nixos-org is outdated due to the [deleted `xorg` set](https://github.com/NixOS/nixpkgs/commit/99f20e75ab076b7d4892fcdfed1af4a742317196).
The local code search related content under https://nix.dev/tutorials/packaging-existing-software#search-nixos-org is outdated due to the deleted
xorgset.