I'm not sure if I find it astonishing or expected that somebody finds all that magic good enough to both build that tool and to be thrilled about somebody did. I, for one, find it absolutely unacceptable. The whole point of virtual containers is to have development environment closely resembling production one (not entirely possible, but better than nothing). Your promise that your tool gives me "best possible environment for Python web-app" isn't enough for me, not even close. In fact, I don't really care what you consider "best possible environment", because I already know that there isn't one and I have experienced multiple times these unpleasant moments when you find out that for your app it actually matters if you use Amazon S3 or GlusterFS on real hardware, how many nodes there are, what are exact settings in php.ini or something else you'd be glad not to care for, but you suddenly do care. I don't need magic software, I don't want magic software, I don't like magic software, I'm afraid of it. I really struggle to imagine somebody who isn't a total newcomer and feels otherwise, but apparently there are such people.<p>What I ideally want is virtual machine based (like vagrant), immutable configuration (like NixOS) approach, with reasonably simple configuration (like docker+fig) and file-based settings (as opposed to docker, where your image is pretty much separate from Dockerfile) with 1 common repo for your "best possible environment" config examples, where every somewhat important decision is explicitly listed and can be changed by user. So something similar (in some sense) to vim-pathogen: git clone, maybe run some other magic command and your env is up and running in several minutes. If contents of config get changed, so does virtual machine.<p>I understand that what I'd like to have is a bit utopical in today's reality. But nevertheless, Otto is pretty much opposite of what I consider perfect — I cannot imagine anything farther from desirable than that.