platform_define in rebar.config

in rebar.config

{erl_opts, [
  ...
  {platform_define, "^R", otp_before_17}
]}.

in code:

-ifdef(otp_before_17).
-type myqueue() :: queue().
-type mydict()  :: dict().
-else.
-type myqueue() :: queue:queue().
-type mydict()  :: dict:dict().
-endif.

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