Extreme Programming has grown up into Continuous Deploy, at least for software giants who can afford extreme automation. Their corresponding contributions to open source accelerate the evolution in the ecosystem. A small team or individual developer who steps off the upgrade train for a moment finds code that can no longer be built.
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"Well, in our country," said Alice, still panting a little, "you'd generally get to somewhere else—if you run very fast for a long time, as we've been doing."
"A slow sort of country!" said the Queen. "Now, here, you see, it takes all the running you can do, to keep in the same place. If you want to get somewhere else, you must run at least twice as fast as that!"
_Carroll, Lewis: Through the Looking-Glass and What Alice Found There, Chapter 2 gutenberg 
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See also Red Queen's Race: wikipedia
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Three years ago I started building an editor for concept maps. I worked on it for about six months. As I recall, I stalled with a couple unresolved UX challenges and then life drew my attention elsewhere.
After several wiki hangouts touched again on concept mapping this year, I thought I'd dust off the code. First impression provokes this meditation. It won't build. Some dependency or another has aged out of existence on the Internet. github
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Update to Mac OS 11.4 revealed a couple updates in our local kubernetes. See Upgrade Interruption 2021-06