🔧 Add configs and setup for `fastapi-slim` including optional extras `fastapi-slim[standard]`, and `fastapi` including by default the same `standard` extras

[tiangolo]

🔧 Add configs and setup for fastapi-slim including optional extras fastapi-slim[standard], and fastapi including by default the same standard extras

The fastapi package now includes the standard default recommended packages, and fastapi-slim comes without those recommended standard packages and with a group of optional dependencies fastapi-slim[standard], equivalent to fastapi, for those that want to opt out of those default standard packages.

[tiangolo]

📝 Docs preview for commit 79621a3acefddaadbc6a9933338f52e0cdde1a82 at: https://28bb498b.fastapitiangolo.pages.dev

[noklam]

Hi! https://discuss.python.org/t/optional-dependency-groups-omitting-package-requirements/20833 brought me to here as I am researching how to split out some optional dependencies in a nice way.

I see that you have taken a custom approach, here is what I understand:

• fastapi-slim share the same codebase as fastapi
• pip install fastapi installs the extra optional dependencies while pip install fastapi-slim doesn't
• pip install fastapi[standard] is equivalent to pip install fastapi[standard] in terms of dependencies

I have a few questions:

• What lead you to decide to implement a custom solution?
• How does this actually work? I see that you are using pdm, but I am surprised when I clone the repository and do pip install -e . it also install the [standard] dependencies automatically, how does this work? I expect this is some "magic" that you add during build time only.

[edouardlp]

This PR causes issues for library maintainers. See https://github.com/tiangolo/fastapi/discussions/11733