python – conda deep tempest dependencies fail to load

i try to create my environment using the requirements.txt file as is laid out in the readme file for setting up deep tempest (github.com/emidan19/deep-tempest)

conda create --name deeptempest --file requirements.txt
Channels:
 - main
 - fastchan
 - nvidia
 - pytorch
 - conda-forge
 - defaults
Platform: linux-64
Collecting package metadata (repodata.json): done
Solving environment: failed

PackagesNotFoundError: The following packages are not available from current channels:

  - pyqtwebengine==5.12.1=pypi_0
  - pyqtchart==5.12=pypi_0
  - pyqt5-sip==4.19.18=pypi_0
  - pybind11==2.11.1=pypi_0
  - numba==0.56.4=np1.16py3.9h59fbc97_g288a38bbd_0
  - llvmlite==0.39.1=py39he1b5a44_0
  - fastwer==0.1.3=pypi_0

Current channels:

  - https://conda.anaconda.org/main
  - https://conda.anaconda.org/fastchan
  - https://conda.anaconda.org/nvidia
  - https://conda.anaconda.org/pytorch
  - https://conda.anaconda.org/conda-forge
  - defaults

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.

conda tells me im missing packages and theyre not available in my current channels despite the fact that they are available in my current channels

conda install fastchan::pyqtwebengine
Channels:
 - main
 - fastchan
 - nvidia
 - pytorch
 - conda-forge
 - defaults
Platform: linux-64
Collecting package metadata (repodata.json): done
Solving environment: done

# All requested packages already installed.

obviously ive tried installing the missing packages but it either tells me theyre already installed or i cant even find the package on anaconda.org at all i.e (fastwer)