prevent users from building runtimes that could not be restored

[anda-ren]

Current Behavior
There is no explicit tip for users to know how to resolve the error when they can't restore a runtime in the case that PyPI package versions conflict with each other

Proposed Behavior
When the user is building a runtime that cannot be restored, swcli should raise an exception and provide instructions on how to build a restorable one

[tianweidut]

• the original requirements.txt

icetk==0.0.7
protobuf==3.20

• When run pip install -r requirements.txt, the error output:
  

• In a new venv environment, first install 'icetk ', then install protobuf==3.20
  

• related

  • https://pip.pypa.io/en/stable/topics/dependency-resolution/
  • https://codingshower.com/pip-dependency-resolver-and-version-conflicts/
  • https://alexo.dev/blog/avoiding-pip-freeze-2/