anchor.diff:    ] else []) ++ (if doCheck then
   
       # Test-suite dependencies
  -    let inherit (stdenv.lib) versionAtLeast optional; in
  -    /* ncurses is required to build an OCaml REPL */
  +    # ncurses is required to build an OCaml REPL
       optional (!versionAtLeast ocaml.version "4.07") ncurses
       ++ [
       python
  
positive.code: }:
  
  with pkgs;
  
  stdenv.mkDerivation rec {
  
  
negative.code: 
    prefixKey = "-prefix ";
  
    buildFlags = optionals buildDoc [ "world" "sphinx" ];
  
    installTargets = [ "install" ] ++ optional buildDoc "install-doc-sphinx";
  
    inherit doCheck;
  
  }
  