How to set python version in a package wrapped by PythonCall (Solved: operator error)

I am writing a wrapper package using PythonCall and I would like to set the python version to <= 3.13. I tried to set the version in CondaPkg.toml:

[deps]
python = "<=3.13"

but it doesn’t seem to work (version is still 3.14 and triggers a bug).

Any suggestions?

I used a wrong version of the library, doh…