anchor.diff:    # Upstream notified by e-mail.
     permutation = dontCheck super.permutation;
   
  -  # https://github.com/vincenthz/hs-tls/issues/102
  -  tls = dontCheck super.tls;
  -
     # https://github.com/jputcu/serialport/issues/25
     serialport = dontCheck super.serialport;
   
  
positive.code:   test-sandbox = dontCheck super.test-sandbox;
    users-postgresql-simple = dontCheck super.users-postgresql-simple;
    wai-middleware-hmac = dontCheck super.wai-middleware-hmac;
    wai-middleware-throttle = dontCheck super.wai-middleware-throttle; # https://github.com/creichert/wai-middleware-throttle/issues/1
    xkbcommon = dontCheck super.xkbcommon;
    xmlgen = dontCheck super.xmlgen;
    hapistrano = dontCheck super.hapistrano;
  
negative.code: 
    # Fails no apparent reason. Upstream has been notified by e-mail.
    assertions = dontCheck super.assertions;
  
    # These packages try to execute non-existent external programs.
    cmaes = dontCheck super.cmaes;                        # http://hydra.cryp.to/build/498725/log/raw
  