A practical reference for applying the same four-layer architecture to Node, Java, Swift, Rust, Go, and Ruby.

Don't put every language under mise. One test decides who owns runtime versions: does the language ship a strong, official tool of its own?

uv had installed a Python that mise did not know about. Setting python-preference to only-system restored one clear owner, with a few consequences for existing projects.

Not every layer deserves strict declarative management. The app layer is fine with eventual consistency, as long as the drift stays visible.

Move zsh config out of the home directory with ZDOTDIR, split it into modules, and manage it declaratively with chezmoi so drift becomes visible.

A DFU restore forced me to decide which tool owns each part of my development environment—and how I would rebuild it.

From adding one text style to reconsidering where Swift belongs in a Web stack