{
  description = "Scala shell";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    systems.url = "github:nix-systems/default";
    flake-utils = {
      url = "github:numtide/flake-utils";
      inputs.systems.follows = "systems";
    };
  };

  outputs = { nixpkgs, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          config.allowUnfree = true;
        };
      in {
        devShells.default = pkgs.mkShell {
          packages = with pkgs; [
            jdk
            scala-next
            scala-cli

            # You might want to use your own IDE.
            (jetbrains.plugins.addPlugins jetbrains.idea-ultimate [ "github-copilot" ])
          ];
        };
      }
    );
}