$ python3 -m virtualenv -p python3 foo
Already using interpreter /usr/bin/python3
Using base prefix '/usr'
/usr/lib/python3/dist-packages/virtualenv.py:1090: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
  import imp
New python executable in /tmp/foo/bin/python3
Also creating executable in /tmp/foo/bin/python
Installing setuptools, pkg_resources, pip, wheel...done.
$ . ./foo/bin/activate
$ pip list
Package       Version
------------- -------
pip           21.3.1
pkg_resources 0.0.0
setuptools    60.3.0
wheel         0.37.1
$ python -m pip list
/tmp/foo/bin/python: Error while finding module specification for 'pip' (AttributeError: module '__main__' has no attribute '__file__')