-

 ~  Coding  Rust  rnix  master  3✎  %  cargo run --example error-report /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/./attrsets.nix
    Finished dev [unoptimized + debuginfo] target(s) in 0.02s
     Running `target/debug/examples/error-report /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/./attrsets.nix`
error: parse error: unexpected token Dynamic([(Meta { span: Span { start: (27, 20), end: Some((27, 24)) }, comments: [] }, Ident("attr"))]) not applicable in this context
Span { start: (27, 18), end: Some((27, 25)) }

      if attrPath == [] then e
      else if e ? ${attr}
                  ^^^^^^^
      then attrByPath (tail attrPath) default e.${attr}