I have a flake that uses oxalica rust overlay to provide Rust tooling.
I would like to add the cargo nextest cargo subcommand. This is not yet available in nixpkgs, so I was planning to add it to the flake with an overlay, and, if it works, submit a PR to nxpkgs.
But it turns out that I don’t understand how to use cargo subcommands which are available in nixpkgs, in combination with the oxalica overlay. For example cargo deps (to pick a random example out of many) is already available in nixpkgs: how can this be added to the cargo
provided via the oxalica overlay?