➜ nix run
warning: Git tree '/Users/richard.banyi/Developer/nix-project-flakes' is dirty
error: attribute 'aarch64-darwin' missing

       at /nix/store/nvss7vjwjdq6prxfwf24swzksn4f6cvm-source/jupyenv/flake.nix:32:18:

           31|       system: let
           32|         inherit (jupyenv.lib.${system}) mkJupyterlabNew;
             |                  ^
           33|         jupyterlab = mkJupyterlabNew ({...}: {
(use '--show-trace' to show detailed location information)

  systems = [
        "x86_64-linux"
        "x86_64-darwin"
        "aarch64-linux"
        "aarch64-darwin"
      ];