Find LV2 plugins using LV2_PATH first

Fixes #4

Signed-off-by: falkTX <falktx@falktx.com>

carla

@@ -1 +1 @@
-Subproject commit d6919785586228020e347bf24288b8317e0b24ef
+Subproject commit 1edb1bb172fce8ae89cf666675ff531fc5dca628

dpf

@@ -1 +1 @@
-Subproject commit e03017963d4e98cb898a6a1b435ad2ca5bccb537
+Subproject commit 4c62f76915478d7cf6ac89cbc1c9714d1fbeb044

plugins/Common/IldaeilPlugin.cpp

@@ -126,6 +126,9 @@ public:
         carla_set_engine_option(fCarlaHostHandle, ENGINE_OPTION_PATH_RESOURCES, 0, "/usr/share/carla/resources");
 #endif
 
+        if (const char* const path = std::getenv("LV2_PATH"))
+            carla_set_engine_option(fCarlaHostHandle, ENGINE_OPTION_PLUGIN_PATH, PLUGIN_LV2, path);
+
         fCarlaPluginDescriptor->dispatcher(fCarlaPluginHandle, NATIVE_PLUGIN_OPCODE_HOST_USES_EMBED,
                                            0, 0, nullptr, 0.0f);
 

plugins/Common/IldaeilUI.cpp

@@ -488,14 +488,25 @@ protected:
 
     void run() override
     {
-        /*
-        // TESTING
-        const char* const path = "/home/falktx/bin/reaper_linux_x86_64/REAPER/InstallData/Effects";
+        const char* path;
 
-        carla_set_engine_option(fPlugin->fCarlaHostHandle, ENGINE_OPTION_PLUGIN_PATH, fPluginType, path);
+        switch (fPluginType)
+        {
+        case PLUGIN_LV2:
+            path = std::getenv("LV2_PATH");
+            break;
+        default:
+            path = nullptr;
+            break;
+        }
+        /* TESTING
+        const char* const path = "/home/falktx/bin/reaper_linux_x86_64/REAPER/InstallData/Effects";
         */
 
-        if (const uint count = carla_get_cached_plugin_count(fPluginType, nullptr))
+        if (path != nullptr)
+            carla_set_engine_option(fPlugin->fCarlaHostHandle, ENGINE_OPTION_PLUGIN_PATH, fPluginType, path);
+
+        if (const uint count = carla_get_cached_plugin_count(fPluginType, path))
         {
             fPluginCount = 0;
             fPlugins = new PluginInfoCache[count];