I think the general summary is just that I'm surprised it takes, at a minimum, 45 seconds to export a venv (especially when none of the requirements have changed). All the noise above was to figure out if it was related to pants versions, the presence of vcs dependencies, and so on. I'm fairly confident that it's not related to having vcs dependencies and that @happy-kitchen-89482 correctly called out the difference between 2.10 and 2.11 since it's constructing a proper venv instead of symlinking.