anchor.diff:  
   stdenv.mkDerivation rec {
     name = "postman-${version}";
  -  version = "5.5.3";
  +  version = "6.1.4";
   
     src = fetchurl {
       url = "https://dl.pstmn.io/download/version/${version}/linux64";
  -    sha1 = "BC0C6117BEC6D1638FD18A0E2A580617669A9297";
  +    sha256 = "2f93a860f87d842c0e0433b55cd7c46e04d1d20c0adcae8680332585dffd86eb";
       name = "${name}.tar.gz";
     };
   
  
positive.code: 
    buildPhase = ":";   # nothing to build
  
    icon = fetchurl {
      url = "https://www.getpostman.com/img/v2/media-kit/Logo/PNG/pm-logo-horiz.png";
      sha256 = "271b88317bd787f4a30ab374148e73314d60fb1b220ef791611774a061c49f30";
    };
  
    desktopItem = makeDesktopItem {
      name = "postman";
      exec = "postman";
      icon = "${icon}";
      comment = "API Development Environment";
      desktopName = "Postman";
      genericName = "Postman";
  
negative.code: 
    installPhase = ''
      mkdir -p $out/share/postman
      cp -R app/* $out/share/postman
  
      mkdir -p $out/bin
      ln -s $out/share/postman/Postman $out/bin/postman
  
      mkdir -p $out/share/applications
      ln -s ${desktopItem}/share/applications/* $out/share/applications/
  
      iconDir=$out/share/icons/hicolor/128x128/apps
      mkdir -p $iconDir
      ln -s $out/share/postman/resources/app/assets/icon.png $iconDir/postman.png
    '';
  
    preFixup = let
  