Protect the anaconda base environment from accidental installs

protect-conda-base.sh

# protect-conda-base.sh
#
# If you use Anaconda, it is really easy to accidentally install packages
# into the base environment. Head that off at the pass.
# However, allow installs in a pip virtual environment.
#
# Allow for an override if you run these commands with a CONDA_PROMPT_OVERRIDE variable set,
# as in:
#
#    CONDA_PROMPT_OVERRIDE pip install powerline-shell
#
# Include this in your .bashrc or .zshrc
#
# Thanks https://stackoverflow.com/a/69617319/424301

function pip(){
    if [ -z "${CONDA_PROMPT_OVERRIDE}" ] && [ -z "${VIRTUAL_ENV}" ] && [ "${CONDA_PROMPT_MODIFIER-}" = "(base) " ] && [ "$1" = "install" ]; then
        echo "Not allowed in base"
    else
        command pip "$@"
    fi
}

function extended_conda(){
    if [ -z "${CONDA_PROMPT_OVERRIDE}" ] && [ "${CONDA_PROMPT_MODIFIER-}" = "(base) " ] && [ "$1" = "install" ]; then
        echo "Not allowed in base"
    else
        conda "$@"
    fi
}
alias conda=extended_conda