venv creation fails when `sys.executable == ''`

from venv

    # Add a `micropython` binary in $PATH pointing to this binary.
    if hasattr(sys, "executable"):
        os.system("cp {} {}".format(sys.executable, venv_bin_path + os.sep + "micropython"))

but on my local copy this happens

MicroPython v1.24.0 on 1980-01-01; darwin [GCC 4.2.1] version
Use Ctrl-D to exit, Ctrl-E for paste mode
>>> import sys
>>> sys.executable
''
>>>

so maybe it is best to add and sys.executable to the check?

    if hasattr(sys, "executable") and sys.executable:

Start in python-stdlib/venv/venv/main.py around line 93 and reproduce the case where sys.executable is an empty string. Check the venv creation path and confirm it handles that value without attempting the failing copy command. Done when venv creation succeeds in this environment and the existing executable case remains supported.