anchor.diff:      
       rebar3_idl_compiler = rebar3_idl_compiler_0_3_0;
       
  -    rebar3_neotoma_plugin_0_2_0 = callPackage
  -      (
  -	{ buildHex, neotoma_1_7_3 }:
  -	  buildHex {
  -	    name = "rebar3_neotoma_plugin";
  -	    version = "0.2.0";
  -	    sha256 =
  -	      "c0ebbdb08c017cac90c7d3310a9bd4a5088a46abd4e2fef9e9a9805a657396b8";
  -	     
  -	    erlangDeps  = [ neotoma_1_7_3 ];
  -	    
  -	    meta = {
  -	      description = "Neotoma rebar plugin";
  -	      license = stdenv.lib.licenses.free;
  -	      homepage =
  -		"https://github.com/zamotivator/rebar3_neotoma_plugin";
  -	    };
  -	  }
  -      ) {};
  -    
  -    rebar3_neotoma_plugin = rebar3_neotoma_plugin_0_2_0;
  -    
  -    rebar3_proper_plugin_0_1_0 = callPackage
  -      (
  -	{ buildHex }:
  -	  buildHex {
  -	    name = "rebar3_proper_plugin";
  -	    version = "0.1.0";
  -	    sha256 =
  -	      "7071555afb623e73a2c572de6d4379f9c197b44e68608944eb2835617faed10d";
  -	      
  -	    meta = {
  -	      description = "A rebar plugin";
  -	      license = stdenv.lib.licenses.free; 
  -	    };
  -	  }
  -      ) {};
  -    
  -    rebar3_proper_plugin = rebar3_proper_plugin_0_1_0;
  -    
       rebar_alias_0_1_0 = callPackage
         (
   	{ buildHex }:
  
positive.code:     
      gurka = gurka_0_1_7;
      
      hackney_1_4_4 = callPackage
        (
  	{
  	  buildHex,
  	  certifi_0_1_1,
  	  idna_1_0_2,
  	  mimerl_1_0_0,
  	  ssl_verify_hostname_1_0_5
  	}:
  	  buildHex {
  	    name = "hackney";
  	    version = "1.4.4";
  	    sha256 =
  	      "c8ab2436556d6bce7e85a85adec67f6abeb8c7508668a3e29750be3c4bf4e3a8";
  	     
  	    erlangDeps  = [
  			    certifi_0_1_1
  			    idna_1_0_2
  			    mimerl_1_0_0
  			    ssl_verify_hostname_1_0_5
  			  ];
  	    
  	    meta = {
  	      description = "simple HTTP client";
  	      license = stdenv.lib.licenses.asl20;
  	      homepage = "https://github.com/benoitc/hackney";
  	    };
  	  }
        ) {};
      
      hamcrest_0_1_1 = callPackage
        (
  	{ buildHex }:
  
negative.code: 	    };
  	  }
        ) {};
      
      erldn_1_0_2 = callPackage
        (
  