rhg: upgrade `clap` dependency
This one is the worst one to upgrade since v2 -> v4 broke a ton of API,
which thankfully seems saner now.
Contrary to what was done in the `hg-core/src/examples/nodemap` rewrite,
we're not switching from the "builder" pattern to the "derive" pattern,
since that would imply a much larger diff. It can be done incrementally.
use crate::error::CommandError;
pub const HELP_TEXT: &str = "
Print the current repo requirements.
";
pub fn args() -> clap::Command {
clap::command!("debugrequirements").about(HELP_TEXT)
}
pub fn run(invocation: &crate::CliInvocation) -> Result<(), CommandError> {
let repo = invocation.repo?;
let mut output = String::new();
let mut requirements: Vec<_> = repo.requirements().iter().collect();
requirements.sort();
for req in requirements {
output.push_str(req);
output.push('\n');
}
invocation.ui.write_stdout(output.as_bytes())?;
Ok(())
}