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Diffstat (limited to 'src/rebar_state.erl')
| -rw-r--r-- | src/rebar_state.erl | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/rebar_state.erl b/src/rebar_state.erl index 176a80b..0c07b2a 100644 --- a/src/rebar_state.erl +++ b/src/rebar_state.erl @@ -370,7 +370,24 @@ providers(State, NewProviders) -> -spec add_provider(t(), providers:t()) -> t(). add_provider(State=#state_t{providers=Providers}, Provider) -> - State#state_t{providers=[Provider | Providers]}. + Name = providers:impl(Provider), + Namespace = providers:namespace(Provider), + Module = providers:module(Provider), + case lists:any(fun(P) -> + case {providers:impl(P), providers:namespace(P)} of + {Name, Namespace} -> + ?DEBUG("Not adding provider ~p ~p from module ~p because it already exists from module ~p", + [Namespace, Name, providers:module(P), Module]), + true; + _ -> + false + end + end, Providers) of + true -> + State; + false -> + State#state_t{providers=[Provider | Providers]} + end. create_logic_providers(ProviderModules, State0) -> try |