Hi I am looking for recommendations/best practices approach for managing virtual environment and third party dependencies? I have a mono repo with multiple projects, each project has it's third party packages which I maintain in

requirements.txt

. In poly repo, I used to create virtual environments, but my understanding with pants tells me that I can achieve similar thing, if I maintain separate lock files for each project and I export the virtual environment using

pants export --py-resolve-format=mutable_virtualenv --export-resolve=python-default

. Is that the recommended way? Another follow up question is, when I add a new package to

requirements.txt

, do I have to update the lock file? And once I update the lock file is it exported to the pants virtual environment or I have to run the command

pants export ...

command again.

You need to update the lock file whenever you add/remove/change a dependency within it.. and yes, if you want to then update your venv, you need to re-export it.