case os:getenv("TRAVIS") of
  "true" ->
    JobId   = os:getenv("TRAVIS_JOB_ID"),
    Plugins = proplists:get_value(plugins, CONFIG, []),
    [{coveralls_coverdata, "_build/test/cover/eunit.coverdata"},
     {coveralls_service_name, "travis-ci"},
     {coveralls_service_job_id, JobId} |
     lists:keystore(plugins, 1, CONFIG, {plugins, [coveralls|Plugins]})];
  _ ->
    CONFIG
end.