anchor.diff:  { stdenv
   , fetchurl
   , lib
  +, makeWrapper
   , meson
   , ninja
   , python3Packages
  
positive.code:   postPatch = ''
      grep -q "'rst2man'" meson.build
      sed -i "s,'rst2man','rst2man.py',g" meson.build
    '';
  
    passthru = {
  
negative.code:   };
  
    nativeBuildInputs = [
      makeWrapper
      meson
      ninja
      python3Packages.docutils
  