anchor.diff:    angel = dontCheck super.angel;
     apache-md5 = dontCheck super.apache-md5;              # http://hydra.cryp.to/build/498709/nixlog/1/raw
     app-settings = dontCheck super.app-settings;          # http://hydra.cryp.to/build/497327/log/raw
  -  aws = dontCheck super.aws;                            # needs aws credentials
  +  aws = appendPatch (dontCheck super.aws)               # needs aws credentials
  +        (pkgs.fetchpatch {
  +          # https://github.com/aristidb/aws/pull/271
  +          # bump a version bound
  +          url = https://github.com/aristidb/aws/commit/3639262ccd6761dea76f052692ac3aefbd254723.patch;
  +          sha256 = "0nxaspldgayqjnidda8w7wps5gdpr2wz6vynl7vkaw8kzxks9bci";
  +        });
     aws-kinesis = dontCheck super.aws-kinesis;            # needs aws credentials for testing
     binary-protocol = dontCheck super.binary-protocol;    # http://hydra.cryp.to/build/499749/log/raw
     binary-search = dontCheck super.binary-search;
  
positive.code:       name = "git-annex-${super.git-annex.version}-src";
        url = "git://git-annex.branchable.com/";
        rev = "refs/tags/" + super.git-annex.version;
        sha256 = "1g5ba1lv0v4zjk5ghdp78wxgszspfda1lrl734fi7hyavqrfjxkz";
      };
    }).override {
      dbus = if pkgs.stdenv.isLinux then self.dbus else null;
  
negative.code:   # 2020-11-17: persistent-test is ahead of the persistent version in stack
    persistent-sqlite = dontCheck super.persistent-sqlite;
  
    # 2020-11-19: hasn‘t bumped aeson bound
    # https://git-annex.branchable.com/bugs/aeson_bound_can_be_bumped_to___60___1.6
    git-lfs = doJailbreak super.git-lfs;
  
    # The tests for semver-range need to be updated for the MonadFail change in
    # ghc-8.8:
    # https://github.com/adnelson/semver-range/issues/15
  