355c58e485
This mirrors the behaviour of systemd - It's udev that parses `.link` files, not `systemd-networkd`. This was originally applied in 36ef112a477034fc6d1d9170bf1bcda0140a8d1d, but was reverted due to 1115959a8d4d73ad73341563dc8bbf52230a281e causing evaluation errors on hydra.
To build the manual, you need Nix installed on your system (no need
for NixOS). To install Nix, follow the instructions at
https://nixos.org/nix/download.html
When you have Nix on your system, in the root directory of the project
(i.e., `nixpkgs`), run:
nix-build nixos/release.nix -A manual.x86_64-linux
When this command successfully finishes, it will tell you where the
manual got generated.