d7a8876c13
The xrandrHeads option has been there since a long time, so there is no need to advertise it as a new feature. Instead, let's focus on just what has changed, which is that we now assign one head to be primary. Signed-off-by: aszlig <aszlig@redmoonstudios.org>
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.