Integration with UPM
repl.it has a project called the [Universal Package Manager](https://github.com/replit/upm). It is an abstraction layer on top of various package managers available for different programming languages. Integration with UPM would make Nim's package ecosystem more accessible for newcomers.

UPM is quite new, so I wanted to bring it to your attention to see what the community thinks. UPM integration would also allow for Nim to become part of repl.it's offering of repl environments, which again would make the language more accessible for newcomers.

UPM integration would benefit from #754 Support for virtual environments.