title: miniforge 3 on ARM OSX, mixing x64 and arm64 packages
body: <p>I have a M1 MacBook, I am using miniforge3 to support osx-arm64 architecture. Unfortunately i need to use some packages not built for ARM (ifcopenshell, pythonocc-core) so I have added as last channel conda-forge/osx-64.
  But this way I end up with packages of mixed architectures and some of then are not working.</p>
  <p>What is the best practise to have an environment only for x64 ? I don't want to install anaconda in parallel</p>
  <p>Thanks in advance</p>