figue (pronounced 'fig', like the fruit) provides configuration parsing from CLI arguments, environment variables, and config files, a bit like figment but based on facet reflection:

use facet_pretty::FacetPretty;
use facet::Facet;
use figue as args;

#[derive(Facet)]
struct Args {
    #[facet(args::positional)]
    path: String,

    #[facet(args::named, args::short = 'v')]
    verbose: bool,

    #[facet(args::named, args::short = 'j')]
    concurrency: usize,
}

# fn main() -> Result<(), Box<dyn std::error::Error>> {
let args: Args = figue::from_slice(&["--verbose", "-j", "14", "example.rs"])?;
eprintln!("args: {}", args.pretty());
Ok(())
# }

The entry point of figue is [builder] — let yourself be guided from there.

• Guide & reference: https://figue.bearcove.eu — task-oriented guide, copy-paste recipes, and an exhaustive reference (attributes, grammar, merge rules, error catalog).
• API docs: https://docs.rs/figue

The site sources live in docs/ and are built with dodeca (ddc serve locally, deployed to GitHub Pages on push to main).

figue uses facet-color for coloring output.

Run hooks/install.sh to install pre-commit and pre-push hooks.

Thanks to all individual sponsors:

...along with corporate sponsors:

...without whom this work could not exist.

The facet logo was drawn by Misiasart.

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.