Unable to install vcs conda package in a python 3.9 environment: package vcs-8.1-py_0 requires vtk-cdat >8.1, but none of the providers can be installed

[tlvu]

$ mamba install -c cdat -c defaults -c conda-forge vcs mesalib

Looking for: ['vcs', 'mesalib']

pkgs/main/linux-64       Using cache
pkgs/main/noarch         Using cache
pkgs/r/linux-64          Using cache
pkgs/r/noarch            Using cache
conda-forge/linux-64     Using cache
conda-forge/noarch       Using cache
cdat/noarch              [====================] (00m:00s) No change
cdat/linux-64            [====================] (00m:00s) No change

Pinned packages:
  - python 3.9.*


Encountered problems while solving:
  - package vcs-8.1-py_0 requires vtk-cdat >8.1, but none of the providers can be installed

Later I found out the reason is

package vtk-cdat-8.2.0.8.2.1-py38hbc81915_0 requires python >=3.8,<3.9.0a0 *_cpython

It means there are no vtk-cdat package for py39. Is it possible to make one? Latest python is 3.10.1 at the moment of this writing.

Thanks.