Problem with specified versions in pixi.toml

[chsafouane]

When I run the following commands using python 3.12

pixi install --pypi fastapi
pixi install --pypi zenml[server]

The second command fails and pixi outputs a long list of incompatibility between versions of fastapi and zenml[server] and then says:

And because you require fastapi>=0.115.6 and zenml[server], we can
      conclude that your requirements are unsatisfiable.

As I didn't specify any version for either, I don't see why it fails to find a good version for both

Here's my full pixi.toml. When I manually changed fastapi version to "*", it installs the environment just fine.

[project]
channels = ["conda-forge"]
description = "Add a short description here"
name = "handbook_eng"
platforms = ["linux-64"]
version = "0.1.0"

[tasks]

[dependencies]
python = "3.12.*"

[pypi-dependencies]
sentence-transformers = ">=3.3.1, <4"
qdrant-client = ">=1.12.1, <2"
loguru = ">=0.7.3, <0.8"
langchain = ">=0.3.10, <0.4"
langchain-core = ">=0.3.22, <0.4"
langchain-community = ">=0.3.10, <0.4"
fastapi = ">=0.115.6, <0.116"
opik = ">=1.2.3, <2"
pymongo = ">=4.10.1, <5"
datasets = ">=3.1.0, <4"
beautifulsoup4 = ">=4.12.3, <5"
selenium = ">=4.27.1, <5"
chromedriver-autoinstaller = ">=0.6.4, <0.7"
langchain-openai = ">=0.2.11, <0.3"
zenml = { version = "*", extras = ["server"] }