anchor.diff:  { stdenv
   , fetchurl
  +, lib
   
   , json-c
   , libargon2
  
positive.code:   src = fetchurl {
      url = "${baseUrl}/${name}.tar.xz";
      hashOutput = false;
      sha256 = "adc623b9e3e3ab5c14145b8baf21b741e513ee5bf90d2b4d85a745c2f05da199";
    };
  
    buildInputs = [
  
negative.code: }:
  
  let
    channel = "2.0";
    version = "${channel}.1";
  
    baseUrl = "mirror://kernel/linux/utils/cryptsetup/v${channel}";
  in
  stdenv.mkDerivation rec {
    name = "cryptsetup-${version}";
  