diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e26b10d..77088fe 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -37,6 +37,7 @@ if (ROOT_FOUND)
     include(${ROOT_USE_FILE})
     add_library(mana-plugin-root-histogram SHARED mana_plugin_root_histogram.cc)
     target_link_libraries(mana-plugin-root-histogram PRIVATE mana mesytec-mnode rxi-logc ${ROOT_LIBRARIES})
+    target_compile_options(mana-plugin-root-histogram PRIVATE -DLOG_USE_COLOR)
 endif()
 
 if (pybind11_FOUND)
diff --git a/src/internal/mana_c_api.h b/src/internal/mana_c_api.h
index 18ea5b3..e9af781 100644
--- a/src/internal/mana_c_api.h
+++ b/src/internal/mana_c_api.h
@@ -65,9 +65,9 @@ extern "C"
         mana_process_system_event_t *process_system_event;
     } mana_sink_plugin_t;
 
-// plugins need to define this function with the name 'mana_get_sink_plugin'
-#define MANA_DEFINE_GET_PLUGIN(name) mana_sink_plugin_t name()
-    typedef MANA_DEFINE_GET_PLUGIN(mana_get_sink_plugin_t);
+// use this to define the entry point into the plugin
+// from c++: extern "C" MANA_C_SINK_PLUGIN() { ... return plugin; }
+#define MANA_C_SINK_PLUGIN mana_sink_plugin_t mana_get_sink_plugin
 
 #ifdef __cplusplus
 }
diff --git a/src/internal/mana_nng.h b/src/internal/mana_nng.h
new file mode 100644
index 0000000..cb786ed
--- /dev/null
+++ b/src/internal/mana_nng.h
@@ -0,0 +1,24 @@
+#ifndef CF5E5AFF_F218_4A25_95DF_8097D7C5685B
+#define CF5E5AFF_F218_4A25_95DF_8097D7C5685B
+
+#include "mana_analysis.h"
+#include <mesytec-mnode/mnode_nng.h>
+
+namespace mesytec::mnode::mana
+{
+
+class NngServer: public IManaSink
+{
+  public:
+    explicit NngServer(nng_socket socket)
+        : socket_(socket)
+    {
+    }
+
+  private:
+    nng_socket socket_;
+};
+
+} // namespace mesytec::mnode::mana
+
+#endif /* CF5E5AFF_F218_4A25_95DF_8097D7C5685B */
diff --git a/src/mana_plugin_c_test.c b/src/mana_plugin_c_test.c
index d3c555f..645fdfd 100644
--- a/src/mana_plugin_c_test.c
+++ b/src/mana_plugin_c_test.c
@@ -44,7 +44,7 @@ MANA_DEFINE_PLUGIN_SYSTEM_EVENT(process_system_event)
     log_debug("system_event: ctx=%p, size=%zu", context, size);
 }
 
-MANA_DEFINE_GET_PLUGIN(mana_get_sink_plugin)
+MANA_C_SINK_PLUGIN()
 {
     mana_sink_plugin_t plugin;
     plugin.init = init;
diff --git a/src/mana_plugin_python.cc b/src/mana_plugin_python.cc
index 7b3530b..d8ebbe2 100644
--- a/src/mana_plugin_python.cc
+++ b/src/mana_plugin_python.cc
@@ -95,7 +95,7 @@ MANA_DEFINE_PLUGIN_SYSTEM_EVENT(process_system_event)
     auto ctx = reinterpret_cast<Context *>(context);
 }
 
-extern "C" MANA_DEFINE_GET_PLUGIN(mana_get_plugin)
+extern "C" MANA_C_SINK_PLUGIN()
 {
     mana_sink_plugin_t plugin;
     plugin.init = init;
diff --git a/src/mana_plugin_root_histogram.cc b/src/mana_plugin_root_histogram.cc
index f0c8e08..11fdea0 100644
--- a/src/mana_plugin_root_histogram.cc
+++ b/src/mana_plugin_root_histogram.cc
@@ -219,7 +219,7 @@ MANA_DEFINE_PLUGIN_SYSTEM_EVENT(process_system_event)
     log_trace("system_event: ctx=%p, size=%zu", context, size);
 }
 
-extern "C" MANA_DEFINE_GET_PLUGIN(mana_get_sink_plugin)
+extern "C" MANA_C_SINK_PLUGIN()
 {
     mana_sink_plugin_t plugin;
     plugin.init = init;