{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

    systems.url = "github:msfjarvis/flake-systems";

    flake-utils = {
      url = "github:numtide/flake-utils";
      inputs.systems.follows = "systems";
    };

    flake-compat = {
      url = "github:nix-community/flake-compat";
      flake = false;
    };
  };

  outputs = {
    self,
    nixpkgs,
    flake-utils,
    ...
  }:
    flake-utils.lib.eachDefaultSystem (system: let
      pkgs = import nixpkgs {inherit system;};
    in {
      devShells.default =
        pkgs.mkShell {nativeBuildInputs = with pkgs; [nodejs yarn];};
    });
}