OtpVersion = list_to_integer(erlang:system_info(otp_release)),

Hooks = case lists:keyfind(post_hooks, 1, CONFIG) of
    false -> [];
    {post_hooks, V} -> V
end,

NewHooks = case OtpVersion >= 27 of
    true ->
        [{erlc_compile, "rm \"$REBAR_DEPS_DIR/json_polyfill/ebin/json.beam\""}];
    false ->
        []
end,

lists:keystore(erl_opts, 1, CONFIG, {post_hooks, Hooks ++ NewHooks}).