the.com/dependency
The thing your code needs that someone else can break at 3am.
means A piece of software, person, or condition that something else relies on to function properly.
from From Latin 'dependere,' to hang down from — picture one thing dangling off another, fate intertwined, gravity unforgiving.
hellTangled dependencies form the dreaded 'dependency hell'
left-padAn 11-line package broke half the internet in 2016
clinical useAlso describes physical or psychological reliance on substances