Git hook to auto-update pytnon venv after `git pull` if some certain files were changed

post-merge

#/usr/bin/env bash
# MIT © Sindre Sorhus - sindresorhus.com
# Forked by Pavlo Shchelokovskyy (pshchelo) - pshchelo.bitbucket.org

# git hook to run a command after `git pull` if a specified file was changed
# Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.

changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"

check_run() {
    echo "$changed_files" | grep --quiet -x "$1" && eval "$2"
}

# Refresh virtualenv if python project requirements have changed.
check_run requirements.txt "pip install -U -r requirements.txt"
check_run test-requirements.txt "pip install -U -r test-requirements.txt"

# Reinstall dev version of current package if setup.cfg changed
check_run setup.cfg "pip install -e ."