Demonstration of pip bug report pypa/pip#7817
python -m venv venv
source venv/bin/activate
pip install -U pip setuptools
pip install git+https://github.com/TD22057/ipybug
Look at venv/bin/ipy_script.py, the shebank line will be:
#!/path/to/venv/bin/python
print("Testing 1 2 3")
but the original script in the repository is this:
#!/bin/env ipython
print("Testing 1 2 3")