Python wheel example.

example.sh

#!/bin/bash
#
# This script demonstrates how to create wheels for distributing the
# packages in a virtualenv.
#
# It first creates a virtualenv named "venv" and populates it with
# several packages. After that it creates wheels of all of the
# packages in the virtualenv for distribution in the wheel
# subdirectory.
#
# It then creates a second virtualenv named "venv1" which populates
# itself with the packages using the wheels only.
#
# Note that this assumes that the python versions on the producer and
# consumers systems is the same. For this case it would probably be
# easier to install the virtualenv in a known place like
# /opt/myapp/venv, then tar or zip it up and distribute it as an
# archive that is restored to a fixed place. If you did not want to
# put it in a fixed place, you could always use the virtual
# --relocatable option.
#
# License: MIT Open Source
# Copyright (c) 2017 by Joe Linoff
#

# ================================================================
# Functions
# ================================================================
function run() {
    local Cmd="$*"
    local LineNum=${BASH_LINENO[0]}
    echo
    echo "INFO:${LineNum}: cmd.run=$Cmd"
    eval "$Cmd"
    local st=$?
    echo "INFO:${LineNum}: cmd.status=$st"
    if (( st )) ; then
        echo "ERROR:${LineNum}: command failed"
        exit 1
    fi
}

# ================================================================
# Main
# ================================================================
deactivate
run rm -rf venv venv1 wheel *~

# Create the wheels.
run virtualenv venv
run source venv/bin/activate
run which python
run which pip
run pip help
run pip install cryptography
run pip install numpy
run pip install virtualenv
run mkdir wheel
run pip freeze '>' wheel/pkgs.txt
run cd wheel
run pip wheel -r pkgs.txt
run cd ..
run deactivate

# Deploy them.
run virtualenv venv1
run source venv1/bin/activate
run which python
run which pip
run pip install --no-index --find-links wheel wheel/cryptography*.whl
run pip install --no-index --find-links wheel wheel/numpy*.whl
run pip install --no-index --find-links wheel wheel/virtualenv*.whl
run python -c "'import cryptography ; cryptography.__version__'"
run deactivate