I updated the Wi-Fi controller software on my Linux home server and now my weather graphs stopped generating.

Stop making containers look attractive, everyone.

Ah-ha, the Wi-Fi controller needed to update the version of MongoDB that my server had installed, and the old version's repository was no longer signed, so apt-get update was failing silently, and that led to my weather graph generator library being linked against an old version of glibc.
Of course, I was about to say that
34%
What?
12.4%
Don't forget to frobnosticate the widgets too
53.6%
Poll ended at .
@futzle I suggest removing the 'graph' part from your generator. Removing a component should be easy enough and leaves you with a weather generator that practically guarantees a couple of Nobel prizes.