&gt; I&#x27;m Lua fanboy, but I&#x27;ve to admit, that I&#x27;m missing clean deployments and upgrades with virtualenv and pypi available in Pyhton. I&#x27;ve never had any issue so far, am I being just lucky bastard? It has been like that for many years already.<p>There&#x27;s a few python libraries out there which just crash the entire stack, like Python-Mysql (or was it PyMysql, or one of the other very similarly named libraries?). And I might be biased, but talking to a mysql-db shouldn&#x27;t be hard.<p>&gt;On the other hand, I&#x27;ve honest to maintain one Redmine instance (which is written in Ruby) and this is real nightmare for me. Each time I&#x27;ve to upgrade, I&#x27;ve to drink a lot day or two in advance :-)<p>I rather mean tools like rake as a task-runner, guard, rubocop, thor as a templating system, rspec, chef as config management, kitchen, food-critic, sinatra for easy web services. It&#x27;s a whole bunch of stable tools and tooling libraries (and they are integrating with each other).