anchor.diff:  
     ### Eclipse Platform
   
  -  eclipse-platform = eclipse-platform-46;
  +  eclipse-platform = eclipse-platform-46; # always point to latest
   
     eclipse-platform-46 = buildEclipse {
       name = "eclipse-platform-4.6.2";
  
positive.code: 
    ### Eclipse CPP
  
    eclipse-cpp-46 = buildEclipse {
      name = "eclipse-cpp-4.6.0";
      description = "Eclipse IDE for C/C++ Developers, Neon release";
  
negative.code: 
    ### Eclipse Scala SDK
  
    eclipse-scala-sdk = eclipse-scala-sdk-441; # always point to latest
  
    eclipse-scala-sdk-441 = buildEclipse {
      name = "eclipse-scala-sdk-4.4.1";
      description = "Eclipse IDE for Scala Developers";
  