Drop redundant faust-cchardet from base image

[agners]

Summary

Drop faust-cchardet from the base image's requirements.txt. It is a redundant explicit entry: faust-cchardet is a transitive dependency in Core, so it lands in the final image regardless of whether the base image installs it.

Why it's redundant

faust-cchardet is required by the axis and pytouchline_extended integration libraries, both of which declare it in their install_requires. Those integrations are part of requirements_all.txt, so faust-cchardet is pulled from the wheels index during the Core image build anyway.

Verified in a current Core image:

$ pip show faust-cchardet
Version: 2.1.19
Required-by: axis, pytouchline_extended

Contrast with the other three entries, which have no dependents and therefore must stay explicit:

$ pip show Brotli mysqlclient psycopg2
Brotli       Required-by:
mysqlclient  Required-by:
psycopg2     Required-by:

So faust-cchardet is the only one of the four that another package pulls in on its own.

Why it was here in the first place

It was originally provisioned in the base image because aiohttp used cchardet (and later its faust-cchardet fork) as an optional charset-detection speed-up — an extra, not a hard dependency, so it had to be installed explicitly. That's what #260 did when it replaced the abandoned cchardet. aiohttp 3.9 dropped built-in chardet/cchardet detection (charset resolution now defaults to UTF-8 unless a fallback_charset_resolver is configured), so that reason no longer applies. The only remaining consumers hard-declare the dependency, which is why the explicit entry can go.

Effect

• The package remains in the final Core image (transitive via axis/pytouchline_extended), just installed in the Core layer instead of the base layer.
• Its version is governed by Core's package_constraints (faust-cchardet>=2.1.18) rather than the pin removed here. (Separately, that constraint is worth tightening to an exact pin to match the grpcio/protobuf/numpy convention for build-from-source C-extensions — a Core-repo change.)

Context

This came out of investigating the failing Dependabot bump #416 (faust-cchardet 2.1.19 → 2.1.20). That bump failed only because of a PyPI upload race — the 2.1.20 sdist landed ~20 min after CI ran, and there is no cp314 wheel on PyPI, so HA builds it from source. It's since been built and published to the wheels index, so #416 would pass on rebase — but for the base image the entry is simply unnecessary. A matching cleanup removes the same unused pin from Supervisor's requirements.txt.

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[frenck]

Thanks, @agners 👍

../Frenck

                       

Blogging my personal ramblings at frenck.dev