rebar.config.script

%%-*- mode: erlang -*-

%% ==============================================================================
%% Relx configs
%% ==============================================================================
Keyfind = fun(K, L) -> {K, V} = lists:keyfind(K, 1, L), V end,

NewRelx = 
    fun(Name, Profiles) ->
        EMQTT = Keyfind(Name, Profiles),
        Relx = Keyfind(relx, EMQTT),
        {release, {emqtt, Vsn}, Apps} = lists:keyfind(release, 1, Relx),
        GitDescribe = lists:last(string:tokens(os:cmd("git describe --tags --always"), "\n")),
        Relx1 = lists:keystore(release, 1, Relx, {release, {emqtt, GitDescribe}, Apps}),
        [{relx, Relx1}]
    end,

Profiles = Keyfind(profiles, CONFIG),
Profiles1 = lists:keystore(emqtt, 1, Profiles, {emqtt, NewRelx(emqtt, Profiles)}),
Profiles2 = lists:keystore(emqtt_pkg, 1, Profiles1, {emqtt_pkg, NewRelx(emqtt_pkg, Profiles1)}),
NewConfig = lists:keystore(profiles, 1, CONFIG, {profiles, Profiles2}),
NewConfig.