Yes. It's also a problem when you're deploying to, for example, EC2 instances that are too limited -- say a t2.tiny for proof-of-concept work -- to compile the

Yes. It's also a problem when you're deploying to, for example, EC2 instances that are too limited -- say a t2.tiny for proof-of-concept work -- to compile the Python lxml library. That's after you figure out which 50 different *-dev libs you have to sudo apt-get install, in a tedious process of trial-and-error, ./configure, make, and error. With Clojure this is a non-issue. lein will download what dependencies you need. And they're all already compiled into .jars. This is a benefit of the JVM infrastructure, but we're comparing Python here, so. And of course you can upgrade the EC2 instance, but an annoying and time-consuming process, since you're not in control of the AWS account yourself, and the entire issue doesn't exist if you're using Clojure.