add pkg resource

src/rebar3.erl

@@ -49,10 +49,12 @@ main(Args) ->
             ok;
         rebar_abort ->
             rebar_utils:delayed_halt(1);
+        {error, rebar_abort} ->
+            rebar_utils:delayed_halt(1);
         {error, {Module, Reason}} ->
             ?ERROR(Module:format_error(Reason, []), []),
             rebar_utils:delayed_halt(1);
-        {error, Error} ->
+        {error, Error} when is_list(Error) ->
             ?ERROR(Error++"~n", []),
             rebar_utils:delayed_halt(1);
         Error ->

src/rebar_fetch.erl

@@ -63,6 +63,13 @@ needs_update(AppDir, Source) ->
     end.
 
 get_resource_type({Type, Location, _}) ->
+    find_resource_module(Type, Location);
+get_resource_type({Type, _, _, Location}) ->
+    find_resource_module(Type, Location);
+get_resource_type(_) ->
+    rebar_pkg_resource.
+
+find_resource_module(Type, Location) ->
     case lists:keyfind(Type, 1, ?RESOURCES) of
         false ->
             case code:which(Type) of
@@ -74,6 +81,4 @@ get_resource_type({Type, Location, _}) ->
             end;
         {Type, Module} ->
             Module
-    end;
-get_resource_type(_) ->
-    rebar_pkg_resource.
+    end.

src/rebar_pkg_resource.erl

@@ -0,0 +1,28 @@
+%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
+%% ex: ts=4 sw=4 et
+-module(rebar_pkg_resource).
+
+-behaviour(rebar_resource).
+
+-export([lock/2
+        ,download/2
+        ,needs_update/2]).
+
+-include("rebar.hrl").
+
+lock(_AppDir, Source) ->
+    Source.
+
+needs_update(Dir, {pkg, _Name, Vsn, _Url}) ->
+    [AppInfo] = rebar_app_discover:find_apps([Dir], all),
+    case rebar_app_info:original_vsn(AppInfo) =:= ec_cnv:to_list(Vsn) of
+        true ->
+            false;
+        false ->
+            true
+    end.
+
+download(Dir, {pkg, _Name, _Vsn, Url}) ->
+    TmpFile = filename:join(Dir, "package.tar.gz"),
+    {ok, saved_to_file} = httpc:request(get, {binary_to_list(Url), []}, [], [{stream, TmpFile}]),
+    {tarball, TmpFile}.

src/rebar_prv_install_deps.erl

@@ -162,7 +162,7 @@ package_to_app(DepsDir, Packages, Pkg={_, Vsn}) ->
             {ok, AppInfo} = rebar_app_info:new(Name, FmtVsn),
             AppInfo1 = rebar_app_info:deps(AppInfo, PkgDeps),
             AppInfo2 = rebar_app_info:dir(AppInfo1, get_deps_dir(DepsDir, Name)),
-            [rebar_app_info:source(AppInfo2, Link)]
+            [rebar_app_info:source(AppInfo2, {pkg, Name, FmtVsn, Link})]
     end.
 
 -spec update_src_deps(integer(), rebar_state:t(), boolean(), sets:set(binary())) ->