"Python 2.7 puts “at our disposal an advanced programming language that is guaranteed not to evolve anymore”, Rougier writes1." Oh no. That's not at all what was intended. Regarding my own research: I'm doing theoretical biophysics. Often I do simulations. If conda stays stable enough, my code should be reproducible. There's however some external binaries(like lammps) I did not turn into a conda package yet. There's no official package that fits my use-case in conda since compilation is fine-grained to each user's needs.