My holy grail will still be landing on a good multi-layer configuration setup for Rust CLIs. Ideally CLI flags merged over top of environment variables merged over top of configuration files.
Twelf [0] was close in unifying things, but I had some friction. Lately I've been using Schematic [1] to handle the environment + config layers, and then just a manual implementation of Clap arguments layered on top.
My holy grail will still be landing on a good multi-layer configuration setup for Rust CLIs. Ideally CLI flags merged over top of environment variables merged over top of configuration files.
Twelf [0] was close in unifying things, but I had some friction. Lately I've been using Schematic [1] to handle the environment + config layers, and then just a manual implementation of Clap arguments layered on top.
[0] https://github.com/bnjjj/twelf.
[1] https://github.com/moonrepo/schematic