[Pharo-project] How to export multiple Pharo packages to VW

The VW5PackageExporter allows the exporting of a package to the VW xml based fileout format. I've adapted the code to be less Seaside-specific, and am now able to export one package (Parasol-Core). If I try to export another package (Parasol-Tests), which depends on the earlier one, it fails to load. It can't resolve the dependency to a superclass defined in Parasol-Core. I've seen that Roassal puts all Pharo packages into one VW package. That would work, but is not very nice. A package in VW doesn't seem to register its dependencies in a fileout. Would creating a parcel help, or should I try something on basis of RPackage? Stephan