"There are too many unrelated apps" message can be repetitive

[duckinator]

cargo_dist::announce::tag_help() has a loop of for &pkg_id in packages { ... } that is sometimes very redundant.

My suspicion is it's printing each target for each platform, or something along those lines. Not verified that yet, though.

Relevant code:

cargo-dist/cargo-dist/src/announce.rs

Lines 800 to 813 in 9b00b0b

	for (version, packages) in &versions {
	write!(help, "--tag=v{version} will Announce: ").unwrap();
	let mut multi_package = false;
	for &pkg_id in packages {
	let info = graph.workspaces.package(pkg_id);
	if multi_package {
	write!(help, ", ").unwrap();
	} else {
	multi_package = true;
	}
	write!(help, "{}", info.name).unwrap();
	}
	writeln!(help).unwrap();
	}

Example in the wild:

Potential solution:

Instead of printing everything immediately, put the names into a HashSet and print the contents of that. That way each name is guaranteed to only be printed once.

[duckinator]

Closing in favor of #1550, which includes the root cause.