anchor.diff:  
     limit-speed = {
       src = fetchFromGitHub {
  +      name = "limit-speed";
         owner = "yaoweibin";
         repo = "nginx_limit_speed_module";
         rev = "f77ad4a56fbb134878e75827b40cf801990ed936";
  
positive.code: 
    naxsi ={
      src = fetchFromGitHub {
        owner = "nbs-system";
        repo = "naxsi";
        rev = "07a056ccd36bc3c5c40dc17991db226cb8cf6241";
  
negative.code: 
    lua = {
      src = fetchFromGitHub {
        name = "lua";
        owner = "openresty";
        repo = "lua-nginx-module";
        rev = "v0.10.15";
  