The situation with Nokia & Harmattan is unfortunately worse, as the responsible people have left the house, and I assume that all r&d infrastructure has been dismantled. Consider this:The source code may not be available in any usable form; even if it is stored in some repository the meaningful way to build it into packages may be lost The toolchains and EE (Engineering Environment) is propably lost, has been dismantled and is no longer recoverable The automatic test environment (servers, scripts, test cases, etc) has been dismantled and is no longer recoverable all the other things I cannot even imagine