How can I reference other optional-dependencies in an optional-dependency?

[FossenWang]

If an optional-dependency actually rely on some other optional-dependencies, I hope to only reference other groups of dependency, rather than write the whole dependencies again.
For example:

[project]
name = "this-package"

[project.optional-dependencies]
flask = ["flask"]
sql = ["sqlalchemy", "pymysql"]
flask-sql = ["flask-sqlalchemy", "this-package[flask,sql]"]

I've tried this with setup.py and pip install which works.

[inigohidalgo]

Hey @FossenWang , not sure if this is a new feature, but you should be able to do that according to docs: https://pdm.fming.dev/latest/usage/dependency/#add-dependencies

[project]
name = "foo"
version = "0.1.0"

[project.optional-dependencies]
socks = ["pysocks"]
jwt = ["pyjwt"]
all = ["foo[socks,jwt]"]