Expose the path to a lesskey file as a module option. This makes it
possible to maintain a single lesskey file, used for both NixOS and
non-nix systems. An example of how this can be done follows.
1. Write a derivation that fetches lesskey from a known location:
  { stdenv, fetchgit }:
  stdenv.mkDerivation {
    name = "foo";
    src = fetchgit { .. };
    phases = [ "unpackPhase" "installPhase" ];
    installPhase = "mkdir -p $out && cp $src/lesskey $out/lesskey";
  }
2. Set programs.less.configFile to the corresponding path:
    programs.less = {
      enable = true;
      configFile = "${pkgs.foo}/lesskey";
    };
		
	
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.