Huh, we don't have this in bash and in zsh, we have it stubbed out

We are working on replacing those completions with native completions, see https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#native-completions

It appears the PR for cargo build --package has stalled out, see #14553.

bash and in zsh

I'm using fish, will it work for it?

Fish provides their own completions for Cargo
https://github.com/fish-shell/fish-shell/blob/master/share/completions/cargo.fish

You might want to open an issue in their repo.

atm our native completions also provide fish completions. Unsure how well they play with fish's own completions. As we stabilize the feature, we'll need to decide what shells we officially support. If we consider supporting fish, we'll then need to work with fish regarding our two different set of completions. Fish does complete things that Cargo likely won't, like cargo add [TAB].

I think it's good to survey the community and ask what shell they use

@epage May I tackle this issue by proceeding with the previous PR?

@nooma-42 you are welcome to. The main issue is how to deal with the different permutations of what kind of packages can be selected with what kind of package arguments can be asked for.