import org.simantics.graph.compiler.GraphCompiler;
import org.simantics.graph.compiler.GraphCompilerPreferences;
import org.simantics.graph.compiler.ValidationMode;
+import org.simantics.graph.compiler.internal.ltk.ISource;
+import org.simantics.graph.compiler.internal.ltk.Problem;
import org.simantics.graph.db.TransferableGraphException;
import org.simantics.graph.db.TransferableGraphSource;
import org.simantics.graph.db.TransferableGraphs;
import org.simantics.graph.representation.TransferableGraph1;
import org.simantics.graphfile.ontology.GraphFileResource;
import org.simantics.layer0.Layer0;
-import org.simantics.ltk.ISource;
-import org.simantics.ltk.Problem;
import org.simantics.modeling.internal.Activator;
import org.simantics.utils.FileUtils;
import org.simantics.utils.datastructures.Pair;