anchor.diff:  
       buildInputs = [ pkgs.unzip pkgs.sqlite ];
   
  -    # ImportError: No module named apsw
  -    # XXX: Looks bad
  +    # python: double free or corruption (fasttop): 0x0000000002fd4660 ***
       doCheck = false;
   
       meta = {
  
positive.code: 
      propagatedBuildInputs = [ httplib2 ];
  
      # AttributeError: 'NoneType' object has no attribute 'clone'
      doCheck = false;
  
      meta = {
  
negative.code:     buildInputs = [ zopeInterface mock ];
  
      preConfigure = "cp test/secrets.py-dist test/secrets.py";
  
      meta = {
        description = "A unified interface to many cloud providers";
  