Small script to quickly setup new python environments using pyenv and direnv.

mkvenv.sh

#!/usr/bin/env bash

envrc=$(cat << EOF
if [ -z "\${VENV_BASE:-}" ] && [ -n "\${VIRTUAL_ENV:-}" ]; then
    VENV_BASE=\$(basename "\${VIRTUAL_ENV}")
fi
export VENV_BASE
unset PS1
EOF
)

setupcfg=$(cat <<EOF
{
  "exclude": [ ".virtualenv" ],
  "venvPath": ".",
  "venv": ".virtualenv"
}
EOF
)

select_python_version () {
    readarray -t lines < <(pyenv versions | sed -e 's/^\*//' -e 's/^ *//' -e 's/\([^ ]*\).*/\1/')

    lines+=('Install new version')

    echo "select python version:"
    select choice in "${lines[@]}"; do
        [[ -n $choice ]] || { echo "eh? try again." >&2; continue; }
        break
    done

    if [[ "$choice" == "Install new version" ]]; then
        install_new_python
    fi
}

install_new_python () {
    read -p "What version? " choice
    pyenv install $choice
    choice=$(pyenv latest $choice)
}

# meh.. maybe add this at some point
install_dependencies () {
    read -p "Install lsp?" deps

}

select_python_version

pyenv local $choice
python -m venv .virtualenv

echo source .virtualenv/bin/activate > .envrc
echo "$envrc" >> .envrc
echo "$setupcfg" >> setup.cfg
source .virtualenv/bin/activate
# shut pip up
pip install --upgrade pip

# common deps i like to have
pip install 'python-language-server[all]' ipython pyls-mypy pyls-black pyls_isort

direnv allow