make the editor setup work again

* tried to fix some versions earlier
* needed the tmf modelling update site to really get this working

VODSLEditor.setup

@@ -6,7 +6,7 @@
     xmlns:jdt="http://www.eclipse.org/oomph/setup/jdt/1.0"
     xmlns:setup="http://www.eclipse.org/oomph/setup/1.0"
     xmlns:setup.p2="http://www.eclipse.org/oomph/setup/p2/1.0"
-    xsi:schemaLocation="http://www.eclipse.org/oomph/setup/jdt/1.0 http://git.eclipse.org/c/oomph/org.eclipse.oomph.git/plain/setups/models/JDT.ecore"
+    xsi:schemaLocation="http://www.eclipse.org/oomph/setup/jdt/1.0 https://raw.githubusercontent.com/eclipse-oomph/oomph/master/setups/models/JDT.ecore"
     name="vodsl"
     label="VODSL ">
   <annotation
@@ -28,11 +28,14 @@
         id="vodsleditor"
         label="${scope.product.label} (${scope.product.version.label})">
       <requirement
-          name="org.eclipse.platform.ide"/>
+          name="org.eclipse.platform.ide"
+          versionRange="[4.21.0,5.0.0)"/>
       <requirement
-          name="org.eclipse.platform.feature.group"/>
+          name="org.eclipse.platform.feature.group"
+          versionRange="4.21.0"/>
       <requirement
-          name="org.eclipse.rcp.feature.group"/>
+          name="org.eclipse.rcp.feature.group"
+          versionRange="4.21.0"/>
       <requirement
           name="org.eclipse.fx.core.shared.feature.feature.group"/>
       <requirement
@@ -43,10 +46,22 @@
           name="org.eclipse.egit.feature.group"/>
       <requirement
           name="openjfx.swt.feature.feature.group"/>
+      <requirement
+          name="org.eclipse.xtext.sdk.feature.group"
+          versionRange="2.25.0"/>
+      <requirement
+          name="org.eclipse.emf.sdk.feature.group"
+          versionRange="2.25.0"/>
       <requirement
           name="openjfx.standard.feature.feature.group"/>
       <repository
-          url="http://download.eclipse.org/releases/2021-06"/>
+          url="https://download.eclipse.org/releases/2021-06/"/>
+      <repository
+          url="https://download.eclipse.org/eclipse/updates/4.21/"/>
+      <repository
+          url="https://download.eclipse.org/modeling/tmf/updates/"/>
+      <repository
+          url="https://download.eclipse.org/tools/orbit/simrel/orbit-aggregation/release/4.34.0/"/>
       <repository
           url="https://vo.jb.man.ac.uk/eclipse/vodsleditor/"/>
       <repository