We just went through this cycle - ultimately we build packages (debs) and dockers, for deployment within VMs. Our build process - depending on the component pushes the deb to repos, or uses the deb in the docker.
After trying to replace pip with Pipenv, we had to stop. The dependency resolution time for 20 declared dependencies (that in turn pull down > 100 components) takes well over 5 minutes. With poetry - it takes less than 33 seconds on a clean system. The times are consistent for both Ubuntu 16.04 and Mac OS X.
Our only goal is to get to the point we're now in - tracking dependencies, and separate dev requirements (like ipython and pdbpp) from our other requirements. Poetry made it fast, simple, and made me an addict.
Over two days, I moved our entire codebase and every single (active) personal project I had to poetry. I don't regret it :)