Currently this repository contains both requirements.txt and Pipfile.lock. Those two files are not kept in sync, which means that depending on how a user installs Paperless, they will have a different set of dependencies available than if they had installed using a different method.

To avoid confusion and ensure that our users always use the same set of dependencies, we should move to a single solution. Given the use of Pipenv within CI, removing requirements.txt seems like the sensible option.

(I mainly opened this issue to keep track of this topic myself. I'll work on migrating to Pipenv and will open a PR for this. If there are any opinions or concerns, please feel free to voice them -- either here or on the PR once it exists.)