On the contrary. The fact that there's at least 4 "mainstream" build tools and their popularity changes every 6 months is a sign of an ecosystem with little st

On the contrary. The fact that there's at least 4 "mainstream" build tools and their popularity changes every 6 months is a sign of an ecosystem with little stability that is no good to build a solid foundation. On Ruby and Python land, how long has it been since RoR and Django have been the dominant players?