Share one options between two values

[remimimimimi]

How can i add build-mode option like cargo --release to Build and Run subcommands without showing up this option in global help?
I want to follow the principle of single responsibility, so repetition is unacceptable.

use clap::{AppSettings, Clap};

#[derive(Clap, Debug)]
#[clap(version = "0.1.0", author = "remimimimi <valent.xarin@gmail.com>")]
#[clap(setting = AppSettings::ColoredHelp)]
pub struct Args {
    /// The target for which the kernel will be assembled
    // #[clap(long, default_value = "riscv64gc-unknown-none-elf")]
    #[clap(arg_enum, long, default_value = "riscv64gc-unknown-none-elf")]
    target: Target,

    #[clap(subcommand)]
    subcommand: Command,
}

#[derive(Clap, Debug)]
#[clap(rename_all = "kebab_case")]
pub enum Target {
    Riscv64gcUnknownNoneElf,
}

#[derive(Clap, Debug)]
pub enum Command {
    /// Run kernel with emulator
    Run(Run),
    /// Build kernel
    Build(Build),
}

#[derive(Clap, Debug)]
#[clap(setting = AppSettings::ColoredHelp)]
pub struct Run {
    /// Command to run hak.elf kernel file, usually this is
    /// qemu qemulator command for choosen target
    #[clap(
        short,
        long,
        default_value = "qemu-system-riscv64 -machine virt -cpu rv64 -smp 4 -m 128M -drive \
                         if=none,format=raw,file=hdd.dsk,id=foo -device virtio-blk-device,scsi=off,drive=foo \
                         -nographic -serial mon:stdio -bios none -device virtio-rng-device -device virtio-gpu-device \
                         -device virtio-net-device -device virtio-tablet-device -device virtio-keyboard-device \
                         -kernel "
    )]
    runner: String,
}

#[derive(Clap, Debug)]
#[clap(setting = AppSettings::ColoredHelp)]
pub struct Build {}

[pksunkara]

Are you asking about hiding the options? If yes, there's hidden.

I want to follow the principle of single responsibility, so repetition is unacceptable.

But this line confused me about what exactly you want.

[remimimimimi]

I want add --release option to Build and Run without repeat in corresponding structs. In other words can i declare this option in Args, so that only Build and Run have this option in help message

[pksunkara]

https://github.com/clap-rs/clap/blob/master/clap_derive/examples/flatten.rs

[remimimimimi]

Thank you!