Install requires vs requirements:

- [link](https://packaging.python.org/en/latest/discussions/install-requires-vs-requirements/)

Keep dependency requirements up-to-date, including transitive dependencies:

- [link](https://modelpredict.com/wht-requirements-txt-is-not-enough)

Applications vs libraries (the need for reproducibility vs reusability):

- [link](https://caremad.io/posts/2013/07/setup-vs-requirement/)

Various dependency conflicts that may arise in a given project:

- [link](https://medium.com/knerd/the-nine-circles-of-python-dependency-hell-481d53e3e025)

A low-friction tool that could potentially solve most of the above, alternatives would be something like Poetry:

- [link](https://github.com/jazzband/pip-tools/)

Dependency specification when packaging