Use the correct syslog dependency

apps/epp_proxy/src/epp_proxy.app.src

@@ -8,6 +8,7 @@
     stdlib,
     ssl,
     lager,
+    syslog,
     lager_syslog]},
   {env,[]},
   {modules, []},

rebar.config

@@ -1,6 +1,7 @@
 {erl_opts, [debug_info, {parse_transform, lager_transform}]}.
 
 {deps, [{hackney, "1.15.1"},
+        {syslog, {git, "https://github.com/Vagabond/erlang-syslog.git", {branch, "master"}}},
         {lager, "3.7.0"},
         {lager_syslog, {git, "https://github.com/erlang-lager/lager_syslog.git"}}]}.
 
@@ -26,6 +27,21 @@
         ]
 }.
 
+{overrides,
+  [{override, syslog, [
+    {plugins, [pc]},
+    {artifacts, ["priv/syslog_drv.so"]},
+    {provider_hooks, [
+      {post,
+        [
+        {compile, {pc, compile}},
+        {clean, {pc, clean}}
+        ]
+      }]
+    }
+  ]}
+]}.
+
 {profiles, [{prod, [{relx, [{dev_mode, false},
                             {include_erts, true}]}]
             },

rebar.lock

@@ -12,7 +12,10 @@
  {<<"mimerl">>,{pkg,<<"mimerl">>,<<"1.2.0">>},1},
  {<<"parse_trans">>,{pkg,<<"parse_trans">>,<<"3.3.0">>},2},
  {<<"ssl_verify_fun">>,{pkg,<<"ssl_verify_fun">>,<<"1.1.4">>},1},
- {<<"syslog">>,{pkg,<<"syslog_app">>,<<"3.4.5">>},0},
+ {<<"syslog">>,
+  {git,"https://github.com/Vagabond/erlang-syslog.git",
+       {ref,"4a6c6f2c996483e86c1320e9553f91d337bcb6aa"}},
+  0},
  {<<"unicode_util_compat">>,{pkg,<<"unicode_util_compat">>,<<"0.4.1">>},2}]}.
 [
 {pkg_hash,[
@@ -25,6 +28,5 @@
  {<<"mimerl">>, <<"67E2D3F571088D5CFD3E550C383094B47159F3EEE8FFA08E64106CDF5E981BE3">>},
  {<<"parse_trans">>, <<"09765507A3C7590A784615CFD421D101AEC25098D50B89D7AA1D66646BC571C1">>},
  {<<"ssl_verify_fun">>, <<"F0EAFFF810D2041E93F915EF59899C923F4568F4585904D010387ED74988E77B">>},
- {<<"syslog">>, <<"75E757F3579ED64D95101AD39A1297BB4B6ACF72B3C9FB3977C2EBD95046F5B8">>},
  {<<"unicode_util_compat">>, <<"D869E4C68901DD9531385BB0C8C40444EBF624E60B6962D95952775CAC5E90CD">>}]}
 ].