#!/usr/bin/env nix-shell
#!nix-shell -i bash

set -e

dirpath="$1"

if ! test -d "$dirpath"
then
  # if the directory *doesn't* exist, try creating it
  # if we fail to create it, ensure we raced with something else and that it's actually a directory
  mkdir "$dirpath" || test -d "$dirpath"
fi