Seconded. I always have a workspace on my NixOs where I can query an LLM to fix anything I don't like about my OS.
9 out 10 times it gets it right on the first shot and my OS is at that point slightly better for the rest of eternity (unless I stop running NixOs, which I don't see happening any time soon). About 2 years of these incremental changes, and some investments on my own part about what tools I really like, has made my OS an absolute joy and breeze to work with.
Nothing compares. It's like having a version of Omarchy, not build by some other dude to fit their world view, but for yourself that co-evolves with your own preferences and tools.