anchor.diff:    version = "1.3.0";
     name = "${pname}-${version}";
     format = "wheel";
  -  disabled = ! (isPy36 || isPy27);
  +  disabled = ! (isPy35 || isPy36 || isPy27);
   
     src = let
         tfurl = sys: proc: pykind:
  
positive.code:             url = tfurl "linux" "gpu" "cp27-none-linux_x86_64";
              sha256 = "10yyyn4g2fsv1xgmw99bbr0fg7jvykay4gb5pxrrylh7h38h6wah";
            };
            py3 = {
              url = tfurl "linux" "gpu" "cp36-cp36m-linux_x86_64";
              sha256 = "12g3akkr083gs3sisjbmm0lpsk8phn3dvy7jjfadfxshqc7za14i";
            };
  
negative.code:             url = tfurl "linux" "cpu" "cp27-none-linux_x86_64";
              sha256 = "09pcyx0yfil4dm6cij8n3907pfgva07a38avrbai4qk5h6hxm8w9";
            };
            py35 = {
              url = tfurl "linux" "cpu" "cp35-cp35m-linux_x86_64";
              sha256 = "0p10zcf41pi33bi025fibqkq9rpd3v0rrbdmc9i9yd7igy076a07";
            };
            py36 = {
              url = tfurl "linux" "cpu" "cp36-cp36m-linux_x86_64";
              sha256 = "1qm8lm2f6bf9d462ybgwrz0dn9i6cnisgwdvyq9ssmy2f1gp8hxk";
            };
  