Running freshly compiled experimental or very recent software on very old servers that cannot be upgraded piecemeal seems very unusual: if you don't want to des

Running freshly compiled experimental or very recent software on very old servers that cannot be upgraded piecemeal seems very unusual: if you don't want to destabilize the servers with updates, you shouldn't want to destabilize them with unproven new software either. It's also strange to be unwilling to fork in source control, if necessary, a maintenance version for legacy servers and a current version for current C++ and current servers. New software should probably run on more current servers and access the old RHEL 6 servers through stable network services (shared folders, DBMS, etc.) instead of expecting them to run bleeding edge software.