set deserialized sources to internal and do not cache them during startup

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/parser/PythonParserImpl.java

@@ -77,6 +77,7 @@
 import com.oracle.truffle.api.nodes.Node;
 import com.oracle.truffle.api.nodes.RootNode;
 import com.oracle.truffle.api.source.Source;
+import com.oracle.truffle.api.source.Source.SourceBuilder;
 import com.oracle.truffle.api.source.SourceSection;
 
 public final class PythonParserImpl implements PythonParser, PythonCodeSerializer, FStringExprParser {
@@ -206,11 +207,16 @@ public RootNode deserialize(ParserErrorCallback errorCallback, byte[] data, Stri
             globalScope = ScopeInfo.read(dis, null);
             int offset = dis.readInt();
 
+            SourceBuilder sb;
             if (path.isEmpty() || offset != 0) {
-                source = Source.newBuilder(PythonLanguage.ID, contents, name).build();
+                sb = Source.newBuilder(PythonLanguage.ID, contents, name);
             } else {
-                source = Source.newBuilder(PythonLanguage.ID, PythonContext.get(null).getEnv().getPublicTruffleFile(path)).content(contents).name(name).build();
+                sb = Source.newBuilder(PythonLanguage.ID, PythonContext.get(null).getEnv().getPublicTruffleFile(path)).content(contents).name(name);
             }
+            if (!errorCallback.getContext().getCore().isCoreInitialized()) {
+                sb = sb.internal(true).cached(false);
+            }
+            source = sb.build();
             sstNode = new SSTDeserializer(dis, globalScope, offset).readNode();
         } catch (IOException e) {
             throw PRaiseNode.raiseUncached(null, PythonBuiltinClassType.ValueError, "Is not possible get correct bytecode data %s, %s", e.getClass().getSimpleName(), e.getMessage());