No problem. I've been a sci fi reader my entire life and was shocked I hadnt stumbled across Vinge earlier. The sequel/prequel to Fire Upon the Deep, called A Deepness in the Sky, is arguably even better and the same idea of tech/code being used and customized far after its written is even more central to the plot.

Two of my favorite reads of the last few years, so I highly recommend them.

Futher... After some digging it looks like there is an old slashdot discussion on the same topic: https://slashdot.org/story/06/11/04/0622246/no-more-coding-f...

Likely some spoilers for the books in there so may be worth holding off until after you've read them if you intend to.