clap-verbosity-flag 2.2.2

Easily add a `--verbose` flag to CLIs using Clap
Documentation 
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use clap::Parser;
use clap_verbosity_flag::Verbosity;
use tracing_log::AsTrace;

/// Foo
#[derive(Debug, Parser)]
struct Cli {
    #[command(flatten)]
    verbose: Verbosity,
}

fn main() {
    let cli = Cli::parse();

    tracing_subscriber::fmt()
        .with_max_level(cli.verbose.log_level_filter().as_trace())
        .init();

    tracing::error!("Engines exploded");
    tracing::warn!("Engines smoking");
    tracing::info!("Engines exist");
    tracing::debug!("Engine temperature is 200 degrees");
    tracing::trace!("Engine subsection is 300 degrees");
}