Evaluating schemas on flakes using IFD

[srid]

Is there a sample Nix code that evaluates and outputs the schema outputs as JSON via nix eval --json?

I tried using https://github.com/DeterminateSystems/flakehub-push/blob/main/src/mixed-flake.nix - and while this works on normal flakes, it does not on flakes using IFD.

❯ head -n 3 flake.nix
{
  inputs.flake = {};
  outputs = inputs:

❯ nix eval --override-input flake github:srid/emanote .#contents --json  | jq
[..]

       error: a 'aarch64-linux' with features {} is required to build '/nix/store/wkq14bwdwmlr3axyi0al4sahs0km2ls9-cabal2nix-emanote.drv', but I am a 'aarch64-darwin' with features {benchmark, big-parallel, nixos-test}

[srid]

Also, is it in scope to keep the likes of mixed-flake.nix in this repo, so consumers can use it directly?