update the build script

Author: Alexander Pann

code/languages/org.iets3.opensource/solutions/org.iets3.opensource.build/models/org/iets3/opensource/build/build.mps

@@ -15280,6 +15280,11 @@
             <ref role="3bR37D" to="al5i:3uPnK4iE1MQ" resolve="com.mbeddr.mpsutil.editor.displayControl" />
           </node>
         </node>
+        <node concept="1SiIV0" id="60PTWgsotgo" role="3bR37C">
+          <node concept="3bR9La" id="60PTWgsotgp" role="1SiIV1">
+            <ref role="3bR37D" node="5wLtKNeSRPD" resolve="org.iets3.core.expr.base" />
+          </node>
+        </node>
       </node>
       <node concept="1E1JtA" id="5wLtKNeSRRf" role="2G$12L">
         <property role="BnDLt" value="true" />