examples/multiple-binaries does not respect name and version

[i-am-logger]

executing

nix eval --raw .#bar

results is

/nix/store/wf1kyxmlghmq0l2mxksidxq3w7xwjly3-rust-workspace-unknown⏎

expected having version

bar-0.1.0⏎

same goes for foo

[i-am-logger]

also, i actually think that it will be better if we can import the package name from Cargo.toml then define it in nix

that will require to point directly to the package toml file rather then the workspace directory

# For `nix build .#bar` and `nix run .#bar`:
packages.bar = naersk'.buildPackage {
  src = ./crates/bar;
};

# For `nix build .#foo` and `nix run .#foo`:
packages.foo = naersk'.buildPackage {
  src = ./crates/foo;
};

[i-am-logger]

I ended up making it work as follow:

let
  naersk' = pkgs.callPackage naersk { };

  readCargoToml =
    path:
    let
      toml = builtins.fromTOML (builtins.readFile path);
    in
    {
      version = toml.package.version or "unknown";
      name = toml.package.name;
    };

  cargo = readCargoToml ./api/Cargo.toml;
in
naersk'.buildPackage {
  name = cargo.name;
  pname = cargo.name;
  src = ./.;
  doCheck = true;
  release = true;
  version = cargo.version;