error:
       … in the condition of the assert statement
         at «github:NixOS/nixpkgs/8c3cede7ddc26bd659d2d383b5610efbd2c7a16e?narHash=sha256-rppURzHviaQN131F%2BnLiLdGfcb0uCd9gGP0E5%2Biw9MI%3D»/lib/customisation.nix:416:13:
          415|           drvPath =
          416|             assert condition;
             |             ^
          417|             drv.drvPath;

       … while evaluating the attribute 'handled'
         at «github:NixOS/nixpkgs/8c3cede7ddc26bd659d2d383b5610efbd2c7a16e?narHash=sha256-rppURzHviaQN131F%2BnLiLdGfcb0uCd9gGP0E5%2Biw9MI%3D»/pkgs/stdenv/generic/check-meta.nix:742:9:
          741|         valid = "no";
          742|         handled = handle {
             |         ^
          743|           inherit attrs meta;

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Refusing to evaluate package 'cljdemo-0.1.0' in /nix/store/k5cw9d7rgscbkdy39bgnfn8jhn5in39c-source/lib/mkGraalBin.nix:69 because it is not available on the requested hostPlatform:
         hostPlatform.system = "x86_64-darwin"
         package.meta.platforms = [
           "aarch64-darwin"
           "aarch64-linux"
           "x86_64-linux"
         ]
         package.meta.badPlatforms = [ ]

       a) To temporarily allow packages that are unsupported for this system, you can use an environment variable
          for a single invocation of the nix tools.

            $ export NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1

          Note: When using `nix shell`, `nix build`, `nix develop`, etc with a flake,
                then pass `--impure` in order to allow use of environment variables.

       b) For `nixos-rebuild` you can set
         { nixpkgs.config.allowUnsupportedSystem = true; }
       in configuration.nix to override this.

       c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
         { allowUnsupportedSystem = true; }
       to ~/.config/nixpkgs/config.nix.