3 ms·

I wouldn't say those tools are "redundant or not needed". Tools like pipenv add features on top of pip and venv. Stuff like separating development dependencies

I wouldn't say those tools are "redundant or not needed". Tools like pipenv add features on top of pip and venv. Stuff like separating development dependencies (e.g. mypy), since you don't need that stuff at runtime. Pipenv will also move transitive dependencies into a lockfile instead of cluttering your requirements.txt (or rather Pipfile in the pipenv world).

samwillis 4y ago
> separating development dependencies I just have: requirements-dev.txt (dev only requirements) requirements.txt (top level requirements) requirements-freeze.txt. (all requirements frozen)
- goodoldneon 4y ago
  How do you make sure that transitive dev dependencies end up in requirements-dev.txt? Do you manually say "dev dep X depends on transitive deps A and B, so I'll put X, A, and B in requirements-dev.txt"?
  - samwillis 4y ago
    I only put top level dependancies in requirements-dev.txt, however you are quite right that a naive `pip freeze > requirements-freeze.txt` would result in it freezing dev dependancies. It's a problem that I hope PIP will solve one day, but I like to keep tooling simple. However because it's so easy to create venvs I regally just rebuild from scratch, do a `pip freeze > requirements-freeze.txt` then install dev dependencies (so not freezing dev dependencies). In many ways I think it's better to not mutate your venv and just rebuild if making significant changes. Fortunately the packaging culture in Python isn't quite the same as with Node and you don't tend to end up with hundreds or thousands of dependancies.
    - rbanffy 4y ago
      > It's a problem that I hope PIP will solve one day, but I like to keep tooling simple. The way I've been doing is to not refer to dev dependencies in requirements.txt and then install the dependencies from requirements.txt before doing a requirements-freeze.txt. I made pip-chill to make the process a bit easier.
    - goodoldneon 4y ago
      Yea, the JS community's "moar dependencies!" culture is a big downside. But I do think that npm is great and pip should take a lot of cues from it
- rsyring 4y ago
  pip-compile facilitates this kind of setup and will generate the frozen/lock version for you.

samwillis 4y ago

> separating development dependencies I just have: requirements-dev.txt (dev only requirements) requirements.txt (top level requirements) requirements-freeze.txt. (all requirements frozen)

goodoldneon 4y ago
How do you make sure that transitive dev dependencies end up in requirements-dev.txt? Do you manually say "dev dep X depends on transitive deps A and B, so I'll put X, A, and B in requirements-dev.txt"?
- samwillis 4y ago
  I only put top level dependancies in requirements-dev.txt, however you are quite right that a naive `pip freeze > requirements-freeze.txt` would result in it freezing dev dependancies. It's a problem that I hope PIP will solve one day, but I like to keep tooling simple. However because it's so easy to create venvs I regally just rebuild from scratch, do a `pip freeze > requirements-freeze.txt` then install dev dependencies (so not freezing dev dependencies). In many ways I think it's better to not mutate your venv and just rebuild if making significant changes. Fortunately the packaging culture in Python isn't quite the same as with Node and you don't tend to end up with hundreds or thousands of dependancies.
  - rbanffy 4y ago
    > It's a problem that I hope PIP will solve one day, but I like to keep tooling simple. The way I've been doing is to not refer to dev dependencies in requirements.txt and then install the dependencies from requirements.txt before doing a requirements-freeze.txt. I made pip-chill to make the process a bit easier.
  - goodoldneon 4y ago
    Yea, the JS community's "moar dependencies!" culture is a big downside. But I do think that npm is great and pip should take a lot of cues from it
rsyring 4y ago
pip-compile facilitates this kind of setup and will generate the frozen/lock version for you.