anchor.diff:    webkitgtk3-javascriptcore = super.webkitgtk3-javascriptcore.override { webkit = pkgs.webkitgtk24x; };
     websnap = super.websnap.override { webkit = pkgs.webkitgtk24x; };
   
  -  # While waiting for https://github.com/jwiegley/gitlib/pull/53 to be merged
  -  hlibgit2 = addBuildTool super.hlibgit2 pkgs.git;
  -
     # https://github.com/mvoidex/hsdev/issues/11
     hsdev = dontHaddock super.hsdev;
   
  
positive.code:   # 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;
  
  
negative.code:   test-sandbox = dontCheck super.test-sandbox;
    users-postgresql-simple = dontCheck super.users-postgresql-simple;
    wai-middleware-hmac = dontCheck super.wai-middleware-hmac;
    xkbcommon = dontCheck super.xkbcommon;
    xmlgen = dontCheck super.xmlgen;
    hapistrano = dontCheck super.hapistrano;
  