fc8e1745c0
so that the links can be followed if the NixOS installation is not mounted as filesystem root. In particular, this makes /etc/os-release adhere to the standard: https://www.freedesktop.org/software/systemd/man/os-release.html Fixes #28833.
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.