anchor.diff:  
     # https://ghc.haskell.org/trac/ghc/ticket/9625
     vty = dontCheck super.vty;
  -  vty_5_15 = dontCheck super.vty_5_15;
   
     # https://github.com/vincenthz/hs-crypto-pubkey/issues/20
     crypto-pubkey = dontCheck super.crypto-pubkey;
  
positive.code:   # https://github.com/plow-technologies/servant-auth/issues/20
    servant-auth = dontCheck super.servant-auth;
  
    servant-auth-server = super.servant-auth-server.overrideScope (self: super: {
      jose = super.jose_0_5_0_2;
    });
  
    # https://github.com/pontarius/pontarius-xmpp/issues/105
    pontarius-xmpp = dontCheck super.pontarius-xmpp;
  
    # Use proper store-core version.
    store_0_3 = super.store_0_3.overrideScope (self: super: { store-core = self.store-core_0_3; });
  
    # https://github.com/bmillwood/applicative-quoters/issues/6
    applicative-quoters = doJailbreak super.applicative-quoters;
  
negative.code: 
    # https://github.com/bos/math-functions/issues/25
    math-functions = dontCheck super.math-functions;
  
    # Fix build for latest versions of servant and servant-client.
    servant_0_10 = super.servant_0_10.overrideScope (self: super: {
  