fix/docs: Python backend dependencies

[B4ckslash]

Description

In #1279, the requirements.txt file got dropped from the extra/ directory during the move to a backend/ directory. As the docs still refer to that file (and it's useful to have a central list of the necessary pip packages), I re-added it with the same content under backend/python.

I also updated the Features->Embeddings docs page to use the new path in the pip install command.

Signed commits

• Yes, I signed my commits.

[netlify]

✅ Deploy Preview for localai canceled.

Name	Link
🔨 Latest commit	7b4b852
🔍 Latest deploy log	https://app.netlify.com/sites/localai/deploys/6568aca1c825ac0008f13ff8

[mudler]

The docs should be updated to run make prepare-extra-conda-environments instead. The mentioned requirements.txt would not really cover the deps that are needed otherwise.

make prepare-extra-conda-environments prepares the conda environments for each backend, so library versions are taken care of as well.

[mudler]

Please update the docs to mention make prepare-extra-conda-environments instead - the requirements.txt file is not used and maintained anymore

[B4ckslash]

The docs should be updated to run make prepare-extra-conda-environments instead. The mentioned requirements.txt would not really cover the deps that are needed otherwise.

make prepare-extra-conda-environments prepares the conda environments for each backend, so library versions are taken care of as well.

I see. I'll fix that up and also add in conda as a required dependency for python backends on the embeddings page.

If it's okay with you, I'd also fix up the Makefiles in the backends, as they all have .PONY targets instead of .PHONY targets.

[mudler]

thanks!