I also started my dotfiles over ten years ago! First commit was in 2012. Use them every day. I thank the awesome folks at Jane Street for teaching me about both dotfiles and Mercurial! (Second job out of college.)
Also stuff to distinguish between different Unix flavors and hardware ("if it's this host which is a sun3 with FPU, add -m68881 to CFLAGS") -- not removed but commented out.