anchor.diff: -{ lib, stdenv, fetchurl, autoreconfHook
  -, enableMail ? false, mailutils, inetutils
  -, IOKit, ApplicationServices }:
  +{ lib
  +, stdenv
  +, fetchurl
  +, autoreconfHook
  +, enableMail ? false
  +, mailutils
  +, inetutils
  +, IOKit
  +, ApplicationServices
  +}:
   
   let
     dbrev = "5171";
     drivedbBranch = "RELEASE_7_2_DRIVEDB";
     driverdb = fetchurl {
  -    url    = "https://sourceforge.net/p/smartmontools/code/${dbrev}/tree/branches/${drivedbBranch}/smartmontools/drivedb.h?format=raw";
  +    url = "https://sourceforge.net/p/smartmontools/code/${dbrev}/tree/branches/${drivedbBranch}/smartmontools/drivedb.h?format=raw";
       sha256 = "0vncr98xagbcfsxgfgxsip2qrl9q3y8va19qhv6yknlwbdfap4mn";
  -    name   = "smartmontools-drivedb.h";
  +    name = "smartmontools-drivedb.h";
     };
   
  -in stdenv.mkDerivation rec {
  +in
  +stdenv.mkDerivation rec {
     pname = "smartmontools";
     version = "7.2";
   
  
positive.code: 
    meta = with lib; {
      description = "Tools for monitoring the health of hard drives";
      homepage    = "https://www.smartmontools.org/";
      license     = licenses.gpl2Plus;
      maintainers = with maintainers; [ peti Frostman ];
      platforms   = with platforms; linux ++ darwin;
      mainProgram = "smartctl";
    };
  }
  
negative.code:     # fixes darwin build
      ./smartmontools.patch
    ];
    postPatch = ''
      cp -v ${driverdb} drivedb.h
    '';
  
    configureFlags = lib.optional enableMail "--with-scriptpath=${lib.makeBinPath [ inetutils mailutils ]}";
  
    nativeBuildInputs = [ autoreconfHook ];
    buildInputs = lib.optionals stdenv.isDarwin [ IOKit ApplicationServices ];
  