{
  inputs = {
    nixpkgs.url = "nixpkgs/nixpkgs-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = {
    nixpkgs,
    flake-utils,
    ...
  }:
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = nixpkgs.legacyPackages.${system};
      flake-checks' = (import ../.).mkChecks {
        inherit pkgs;
        root = ../.;
      };
    in {
      # we use alejandra, so nixfmt will always fail
      checks = builtins.removeAttrs flake-checks' ["nixfmt"];
    });
}