In a requirements-*.in file, at the top of the file, are lines with -c and -r flags followed by a requirements-*.in file. Uses relative paths (ignoring URLs).

Say have docs/requirements-pip-tools.in

-r ../requirements/requirements-prod.in
-c ../requirements/requirements-pins-base.in
-c ../requirements/requirements-pins-cffi.in

...

The intent is compiling this would produce docs/requirements-pip-tool.txt

But there is confusion as to which flag to use. It's non-obvious.

constraint

Subset of requirements features. Intended to restrict package versions. Does not necessarily (might not) install the package!

Does not support:

editable mode (-e)
extras (e.g. coverage[toml])

Personal preference

always organize requirements files in folder(s)
don't prefix requirements files with requirements-, just doing it here
DRY principle applies; split out constraints which are shared.

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[–] logging_strict 1 points 1 day ago (1 children)

Most languages don't support packages containing multiple languages (C/C++, Cython, and Python). So Python situation is much more complex.

distutils

setuptools is complex

pip is complex

requirements files are complex

space aliens wrote pytest (and pluggy)

publishing and dependencies are super centralized, depending on pypi.org way too much.

Comparing Rust vs Python is nonsense. Rust is a stricter compiler on top of C. It has to deal with legacy C libraries. It has it very very easy.

[–] [email protected] 1 points 1 day ago (1 children)

and despite those differences, uv is essentially cargo for Python, showing it is possible.

[–] logging_strict 1 points 16 hours ago

Which begets the question, why inject an additional toolchain into package when not skilled at all in that toolchain. Can't support issues caused by that toolchain.