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-rw-r--r--src/rebar_prv_install_deps.erl8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/rebar_prv_install_deps.erl b/src/rebar_prv_install_deps.erl
index 461baa5..1be094c 100644
--- a/src/rebar_prv_install_deps.erl
+++ b/src/rebar_prv_install_deps.erl
@@ -81,6 +81,8 @@ do(State) ->
{ok, rebar_state:deps_to_build(State1,
lists:dropwhile(fun rebar_app_info:valid/1
, Sort -- ProjectApps))};
+ {error, {cycles, Cycles}} ->
+ {error, {?MODULE, {cycles, Cycles}}};
{error, Error} ->
{error, Error}
end
@@ -91,6 +93,12 @@ do(State) ->
end.
-spec format_error(any()) -> iolist().
+format_error({cycles, Cycles}) ->
+ Prints = [["applications: ",
+ [io_lib:format("~s ", [Dep]) || Dep <- Cycle],
+ "depend on each other~n"]
+ || Cycle <- Cycles],
+ ["Dependency cycle(s) detected:~n", Prints];
format_error(Reason) ->
io_lib:format("~p", [Reason]).