broken link given by `nix build` compiler to documentation.

[Propfend]

Problem

was running my derivation to build a rust project fetched from github:

{ pkgs
, lib
, fetchFromGitHub
, rustPlatform
}:

rustPlatform.buildRustPackage rec {
  pname = "paddler";
  version = "1.2.1";

  src = fetchFromGitHub {
    owner = "distantmagic";
    repo = "paddler";
    rev = "v${version}";
    sha256 = "sha256-gWnahj1A+1XUQIQI0JH1u7K5euYQ01d9qMm99Vjaeg=";
  };

  cargoSha256 = "sha256-9atn5qy8Dy4PGiUoHFhg+TVGUr71fiah40TJbBNeEy4=";

  nativeBuildInputs = [
    pkgs.cmake
    pkgs.openssl
    pkgs.pkg-config
  ];

  # buildInputs = [ pkgs.openssl ];

  meta = {
    description = "Stateful load balancer custom-tailored for llama.cpp";
    homepage = "https://github.com/distantmagic/paddler";
    license = lib.licenses.unlicense;
    maintainers = [];
  };
}

and got the error:

error: cannot evaluate a function that has an argument without a value ('pkgs')
       Nix attempted to evaluate a function as a top level expression; in
       this case it must have its arguments supplied either by default
       values, or passed explicitly with '--arg' or '--argstr'. See
       https://nixos.org/manual/nix/stable/language/constructs.html#functions.
       at /home/debian/home/programming/intentt/paddler/default.nix:1:3:
            1| { pkgs
             |   ^
            2| , lib

but this link is broken: https://nixos.org/manual/nix/stable/language/constructs.html#functions.