Devcontainer env probe

devcontainer.sh

#!/bin/bash

[[ $ENVRC_RUN != yes ]] && source /etc/envrc

# whether running via vscode env probe
if shopt -q login_shell && [[ "$BASH_EXECUTION_STRING" =~ $HOME/.vscode-server/bin/.*/node ]]; then
    old_bash_path="$(which bash)"

    if [ ! -z "${ENV_PRINT_COMMAND}" ]; then
        cd "${WORKSPACE_DIR}"
        eval "$(${ENV_PRINT_COMMAND})"
        cd -
    elif [ -f "${WORKSPACE_DIR}/.envrc" ]; then
        eval "$(direnv exec ${WORKSPACE_DIR} direnv dump bash)"
    elif [ -f "${WORKSPACE_DIR}/flake.nix" ]; then
        cd "${WORKSPACE_DIR}"
        eval "$(nix print-dev-env)"
        cd -
    elif [ -f "${WORKSPACE_DIR}/shell.nix" ]; then
        eval "$(nix print-dev-env -f ${WORKSPACE_DIR}/shell.nix)"
    fi

    # remove bash from path if nix shell has overriden it,
    # we don't want dev environment to pullute our shell
    if [ "$(which bash)" != "${old_bash_path}" ]; then
        PATH=:$PATH:
        PATH=${PATH//:$(dirname $(which bash)):/:}
        PATH=${PATH#:}; PATH=${PATH%:}
        export PATH
    fi
fi