Relax setuptools build dependency

[tjni]

Since setuptools is already on version 68.1.2.

[farmio]

Hi 👋!
I'm curious, why would this package be part of nxipkgs? What is the criteria for including one?
knx-frontend has no direct use. It is only intended to be installed from Home Assistant.

[tjni]

That's a great question. When it comes to Python packages, think of nixpkgs like PyPI with the following caveats:

1. It usually only contains the latest version of each package.
2. It builds from source (either from the PyPI sdist or from a version control).

If someone wants to package something (like Home Assistant) that depends on knx-frontend, then knx-frontend has to be packaged as well, just like how it would be on PyPI.

[farmio]

Oh dear, I hope no one tries to package HA with a package repo that only has the latest versions of everything 😬 it has so many dependencies - and all of them are pinned. On the other hand, I think it doesn't even require them in package, but installs on runtime via pip.

Anyway, good luck with your project!

[tjni]

Thank you very much for the well wishes! I think pinning is pretty great for an ecosystem like Home Assistant is. We've made the same choice in nixpkgs, which is to choose a single version instead of using a constraint solver to find some version. I expect we will sometimes have different versions, and then it's our responsibility to reconcile them. Sometimes, I imagine we will patch things locally, but I also intend to upstream changes when they make sense.