CONFIG1 = case os:getenv("TRAVIS") of
              "true" ->
                  JobId = os:getenv("TRAVIS_JOB_ID"),
                  [{coveralls_service_job_id, JobId},
                   {coveralls_coverdata, "_build/test/cover/*.coverdata"},
                   {coveralls_service_name , "travis-ci"} | CONFIG];
              _ ->
                  CONFIG
          end,

CUR_BRANCH = os:cmd("git branch | grep -e '^*' | cut -d' ' -f 2") -- "\n",

MATCH_BRANCH = fun (BranchName) when BranchName =:= "master";
                                     BranchName =:= "develop" ->
                       BranchName;
                   (BranchName) ->
                       case string:prefix(BranchName, "release") of
                           nomatch -> "develop";
                           _Match -> BranchName
                       end
               end,

BRANCH = MATCH_BRANCH(CUR_BRANCH),

DEPS = case lists:keyfind(deps, 1, CONFIG1) of
           {_, Deps} -> Deps;
           _ -> []
       end,

UrlPrefix = "https://github.com/emqx/",

EMQX = {emqx, {git, UrlPrefix ++ "emqx", {branch, BRANCH}}},

EMQX_RULE_ENGINE = {emqx_rule_engine, {git, UrlPrefix ++ "emqx-rule-engine", {branch, BRANCH}}},

NewDeps = [EMQX, EMQX_RULE_ENGINE | DEPS],

CONFIG2 = lists:keystore(deps, 1, CONFIG1, {deps, NewDeps}),

CONFIG2.