Agreed. It's also a tough problem. Before starting Repl.it, I worked on a JavaScript packager at Facebook (which became the Metro Packager). With Repl.it we're

Agreed. It's also a tough problem. Before starting Repl.it, I worked on a JavaScript packager at Facebook (which became the Metro Packager). With Repl.it we're working on what we're calling a "universal package manager", a common abstraction on top of the various language package managers. It also has a visual interface which generates a requirements.txt/package.json/etc for you. https://repl.it/site/blog/packager https://repl.it/site/blog/packager