pip dependencies

[MMesch]

I am trying to install https://pypi.org/project/pyodide-http/ to use it in a pyjs environment to monkey patch some urllib downloads in obspy. This works fine on jupyterlite (on github or via notebook.link). But unfortunately this environment.yml:

name: pyjs-obspy
channels:
  - https://repo.prefix.dev/emscripten-forge-4x
  - https://repo.prefix.dev/conda-forge
dependencies:
  - python
  - obspy
  - matplotlib
  - numpy
  - scipy
  - pyjs
  - requests
  - pip:
    - pyodide-http

produces (with micromamba create -f environment.yml --platform emscripten-wasm32 --prefix ./env)

warning  libmamba You are using 'pip' as an additional package manager.
    Be aware that packages installed with 'pip' are managed independently from 'conda-forge' channel.

Installing pip packages: pyodide-http
python3 is not supported on this platform.
critical libmamba pip failed to install packages

Is this already supported?