Hi, due to the recent MPI cleanup work in science, which has reached Factory meanwhile, there are a few new choices: python3-vtk: python3-vtk python3-vtk-openmpi python3-vtk-openmpi2 netcdf13: libnetcdf13 libnetcdf13-openmpi libnetcdf13-openmpi2 Please add Prefer's for the non-MPI variants. Note, for netcdf there already is "Prefer: -libnetcdf13-openmpi". There is also "(+)netcdf11", which no longer exists. Btw, is there a better way to specify this, especially for versioned libraries? Kind regards, Stefan -- Stefan Brüns / Bergstraße 21 / 52062 Aachen home: +49 241 53809034 mobile: +49 151 50412019