Can't publish from workspace root, no -p option

[Riateche]

Unlike other cargo commands, cargo publish doesn't accept -p or --package option, so cargo publish doesn't work at all at the workspace root:

$ cargo publish
error: manifest path `.../Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
$ cargo publish -p name 
error: Found argument '-p' which wasn't expected, or isn't valid in this context

Lack of the -p option seems like an oversight.

[sfackler]

You can use cargo publish --manifest-path name/Cargo.toml, but a -p flag would be much cleaner.

[tcmal]

@rustbot claim