anchor.diff:      install generate/unix/bin*/iasl $out/bin
     '';
   
  -  meta = with stdenv.lib; {
  +  meta = with lib; {
       description = "Intel ACPI Compiler";
       homepage = http://www.acpica.org/;
       license = licenses.iasl;
  
positive.code: 
    src = fetchurl {
      url = "https://acpica.org/sites/acpica/files/acpica-unix-${version'}.tar.gz";
      multihash = "QmdYk4mcdETNo9jVzJdjhEwrbkREWGC2bbyFySLsFojNAz";
      sha256 = "56ac1f870db698fc46f9be0698abe6f4b5bf189bfb12cf982302c0a8f920856a";
    };
  
    nativeBuildInputs = [
  
negative.code: , bison
  , fetchurl
  , flex
  , lib
  }:
  
  let
    inherit (lib)
      replaceChars;
  
    version = "2018-01-05";
    version' = replaceChars ["-"] [""] version;
  in
  stdenv.mkDerivation rec {
  