16c923cef2
When displaying a warning about a removed Option we should always include reasoning why it was removed and how to get the same functionality without it. Introduces such a description argument and patches occurences (mostly with an empty string). startGnuPGAgent: further notes on replacement
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.