[Tipewryter]

This outputs many pages of debug information and then dies. The error seems to be this:

    This package requires Rust >=1.41.0.

[sillysaurusx]

Hold it! (Pretend I'm Ace Attorney: https://www.youtube.com/watch?v=2lQgZ52iONU&ab_channel=DHC)

The solution here is, your python environment is borked. I've seen this many times.

Step one, is to install a fresh Python. You can do that using pyenv: https://github.com/pyenv/pyenv#installation

  curl https://pyenv.run | bash

Once you can do `pyenv versions`, you should see `system` is your only python.

You can run `pyenv install 3.9` to get the latest.

Now that you're running the latest 3.9, the goal is to install each of the dependencies of this project, one by one.

Step one: try to run the project. It will fail with an error.

Step two: install the library that it says is missing.

Step three: Go to step one.

I've followed this algorithm so many times that I can't count anymore how often it's saved me. Forget poetry, and forget a requirements.txt file. This is the only way I do it on my local laptop. (And I usually use the regular system python, but, yours seems to be in a suspect state.)

If after all of this you still get errors, then I'm truly sorry; god be with you, you're not alone, but I'm not sure anyone can help. It's definitely not the fault of this project that pillow can't be installed. :)

[DemocracyFTW]

> your python environment is borked. I've seen this many times

Your solution looks simple and easy to follow. There's a flow chart to simplify this process here: https://xkcd.com/1987/

[bsdz]

That's very strange. The core library uses pure python and demo uses pyqt5, pandas, matplotlib and pillow. I wasn't aware that any of those projects (or sub projects) depend on Rust. I'm running on Linux / Ubuntu 20.04 with Python 3.8. How about you?

(The pip command I just gave should only install the core library and so only depends on base python).

[Tipewryter]

Here is how to reproduce it in a fresh docker container, so we have the same environment:

    docker run -it --rm debian:10-slim /bin/bash

    apt update
    apt install -y git python3-pip --no-install-recommends
    pip3 install git+https://github.com/bsdz/calcengine.git#master

Result: "This package requires Rust >=1.41.0."

[eesmith]

Does it depend on the cryptography library? https://github.com/pyca/cryptography/issues/5771

[childintime]

> I'm running on Linux / Ubuntu 20.04 with Python 3.8. How about you?

Indeed, on Python 3.9 it doesn't install, as it requires Python 3.8.

I'd like to try this, how to proceed?