That has been around for a long time. I remember it in the early 2000s. > Decades old footguns - aaargh! Indeed... The tricky problem they have is wrapping

That has been around for a long time. I remember it in the early 2000s. > Decades old footguns - aaargh! Indeed... The tricky problem they have is wrapping it into some sort of lock could cause so many issues. Places that dont deadlock, suddenly could. Not a fun problem to solve. In practice it is usually not too bad as you are usually not changing your env vars much. But when you run into it, ugh.