In 2008, before many of the options for configuration that are available now had been created, I came up with a hierarchical configuration language [0] to use in my Python code. More recently, I had a look at some of the newer options available (JSON5, HJSON, HOCON, SANE and TOML), but still find them wanting in various ways. The latest iteration of my take on it [1] is now available in multiple environments (Python, the JVM, .NET, Go, Rust, D and JavaScript). I would welcome any critique from the HN community.

[0] https://wiki.python.org/moin/HierConfig

[1] https://docs.red-dove.com/cfg/index.html