One issue that arises is wrt to the external dependencies, i.e. the patched ParMETIS. The Elemental package depends on this specific version but it would not be proper to just ship the lib in the Elemental package (conflict with i.e. Ubuntu provided ParMETIS package). The cleanest approach would be to package all the dependencies as well and put the constraints for that in the Elemental deb information. All these packages could be pushed to ppa. Any opinions/suggestions how this issue can be resolved?