needs-updates.sh

#!/usr/bin/env bash
#
# Bash script for checking what installed packages in a virtualenv needs updates
#
# Requires:
# - OSX
# - core-utils installed (brew install core-utils)
# - pypi-cli installed (pip install pypi-cli)
#
# Example output:
# $ ./needs-updates.sh
# pytest needs to update. (currently: 2.8.7, latest: 3.1.3)
#
set -efuo pipefail
for requirement in $(pip freeze); do
  package="$(echo "${requirement}" | awk -F"==" '{ print $1 }')"
  current_version="$(echo "${requirement}" | gcut -d '=' -f 3-)"
  # requests.get('https://pypi.python.org/pypi/pip/json').json()['info']['version']
  latest_version="$(pypi info "${package}" | grep "Latest release" | gcut -d ":" -f 2- | tr -d "[:space:]")"
  if [[ "${current_version}" != "${latest_version}" ]]; then
    echo "${package} needs to update. (currently: ${current_version}, latest: ${latest_version})"
  fi
done