A bootstrap script for a pip-tools based Python project.

bootstrap.sh

#!/usr/bin/env bash

# setting -e to exit immediately on a command failure.
# setting -o pipefail sets the exit code of a pipeline to that of the rightmost command to exit with a non-zero status, or to zero if all commands of the pipeline exit successfully.
set -eo pipefail

# Most likely you will only need to change the path variables per your project structure.

DEV_REQ_PATH=./
REQ_PATH=./services/cms/

IN_FILE_EXT=".in"
OUT_FILE_EXT=".txt"
DEV_FILE_NAME="dev_requirements"
REQ_FILE_NAME="requirements"
IN_DEV_FINAL=$DEV_REQ_PATH$DEV_FILE_NAME$IN_FILE_EXT
IN_REQ_FINAL=$REQ_PATH$REQ_FILE_NAME$IN_FILE_EXT
OUT_DEV_FINAL=$DEV_REQ_PATH$DEV_FILE_NAME$OUT_FILE_EXT
OUT_REQ_FINAL=$REQ_PATH$REQ_FILE_NAME$OUT_FILE_EXT


if [ -z "$VIRTUAL_ENV" ]; then
    echo "WARNING: you are not in a virtualenv"
    exit 1
fi


# Check to see if pip-tools is installed if not install it.
if [ ! "pip show pip-tools" ]; then
    echo "INFO: pip-tools not found. Installing now."
    pip install -U pip pip-tools
    echo "INFO: pip-tools installed"
fi


# Compile requirements if file does not already exist
if [ ! -f "$OUT_REQ_FINAL" ]; then
    echo "INFO: pip-tools compiling $OUT_REQ_FINAL"
    pip-compile $IN_REQ_FINAL -o $OUT_REQ_FINAL

fi

if [ ! -f "$OUT_DEV_FINAL" ]; then
    echo "INFO: pip-tools compiling $OUT_DEV_FINAL"
    pip-compile $IN_DEV_FINAL -o $OUT_DEV_FINAL
fi

# Sync Virtualenv
echo "INFO: pip-tools syncing virtualenv"
pip-sync $OUT_REQ_FINAL $OUT_DEV_FINAL