matthewfeickert/venv-activate

Bash creation and tab completion of activation of Python virtual environments

venv-activate's Issues

Apply Shellcheck recommendations

Using Shellcheck on _venv-activate.sh reveals the following issues:

$ shellcheck _venv-activate.sh 

In _venv-activate.sh line 8:
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    ^-- SC2034: prev appears unused. Verify it or export it.


In _venv-activate.sh line 9:
    opts="$(echo $($(which ls) -1 ${HOME}/venvs/ | sed 's/^//'))"
                 ^-- SC2046: Quote this to prevent word splitting.
                 ^-- SC2005: Useless echo? Instead of 'echo $(cmd)', just use 'cmd'.
                                  ^-- SC2086: Double quote to prevent globbing and word splitting.


In _venv-activate.sh line 12:
        COMPREPLY=($(compgen -W "${opts}" $cur))
                                          ^-- SC2086: Double quote to prevent globbing and word splitting.


In _venv-activate.sh line 19:
        $(which ls) -1 ${HOME}/venvs/ | sed 's/^/* /'
                       ^-- SC2086: Double quote to prevent globbing and word splitting.


In _venv-activate.sh line 28:
        printf "\n$1 is not a valid virtual environment."
               ^-- SC2059: Don't use variables in the printf format string. Use printf "..%s.." "$foo".

These should be addressed and fixed. 👍

Consider API for Python and pip info, pip list, pip freeze, pip show

Given _VENV_ACTIVATE_HOME and the name of the virtual environment to query/use the full path to any Python and pip runtime for any virtual environment is know. Given this, without having to activate the virtual environment information on it can be queried. For venv ${name} the full paths are:

• Python: "${_VENV_ACTIVATE_HOME}"/${name}/bin/python
• pip: "${_VENV_ACTIVATE_HOME}"/${name}/bin/pip

So something like venv-info could give information on Python and pip version

$ venv-info sandbox
Python: v3.7.5
pip: v19.3.1
packages installed: 37

and then mirroring pip one could do

$ venv-pip list sandbox
<output of sandbox's pip list>
$ venv-pip freeze sandbox
<output of sandbox's pip freeze>
$ venv-pip show numpy sandbox
Name: numpy
Version: 1.17.4
Summary: NumPy is the fundamental package for array computing with Python.
Home-page: https://www.numpy.org
Author: Travis E. Oliphant et al.
Author-email: None
License: BSD
Location: /home/feickert/.venvs/sandbox/lib/python3.7/site-packages
Requires: 
Required-by: tensorflow-gpu, tensorboard, scipy, opt-einsum, Keras-Preprocessing, Keras-Applications, jaxlib, jax, h5py

The API could be improved though.