Fix carla.lv2 ttl validation

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

.github/workflows/dpf.yml

@@ -59,16 +59,20 @@ jobs:
           pawpaw: true
           release: false
 
-  pluginval:
-    runs-on: ubuntu-20.04
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          submodules: recursive
-      - uses: distrho/dpf-makefile-action@v1
-        with:
-          target: pluginval
-          pawpaw: true
+  # NOTE disabled for now
+  # lv2lint does not allow to differentiate exposed features for multiple plugins in a single binary
+  # (e.g. plugin A uses worker while plugin B does not, but they come from the same binary)
+  # see https://github.com/falkTX/Carla/actions/runs/7389992205/job/20103997236
+  #pluginval:
+    #runs-on: ubuntu-20.04
+    #steps:
+      #- uses: actions/checkout@v3
+        #with:
+          #submodules: recursive
+      #- uses: distrho/dpf-makefile-action@v1
+        #with:
+          #target: pluginval
+          #pawpaw: true
 
   source:
     runs-on: ubuntu-20.04

source/plugin/carla-lv2-export.cpp

@@ -122,6 +122,7 @@ static void writeManifestFile(PluginListManager& plm, const uint32_t microVersio
     text += "@prefix lv2:  <" LV2_CORE_PREFIX "> .\n";
     text += "@prefix mod:  <http://moddevices.com/ns/mod#> .\n";
     text += "@prefix opts: <" LV2_OPTIONS_PREFIX "> .\n";
+    text += "@prefix owl:  <http://www.w3.org/2002/07/owl#> .\n";
     text += "@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .\n";
     text += "@prefix ui:   <" LV2_UI_PREFIX "> .\n";
     text += "\n";
@@ -130,7 +131,7 @@ static void writeManifestFile(PluginListManager& plm, const uint32_t microVersio
     // Project
 
     text += "<https://kx.studio/carla>\n";
-    text += "    a owl:Ontology, lv2:Project, doap:Project ;\n";
+    text += "    a owl:Ontology, doap:Project ;\n";
     text += "    doap:homepage <https://kx.studio/carla> ;\n";
     text += "    doap:maintainer [\n";
     text += "        foaf:homepage <https://falktx.com/> ;\n";