nixos/templates/base/flake.nix

{
  description = "basic tool setup flake";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    flake-utils-plus.url = "github:gytis-ivaskevicius/flake-utils-plus";
  };

  outputs = { self, nixpkgs, nixpkgs-unstable, flake-utils, flake-utils-plus
    , ... }@inputs:
    { } // (flake-utils.lib.eachDefaultSystem (system:
      let
        unstable = import nixpkgs-unstable { inherit system; };
        pkgs = import nixpkgs { inherit system; };
      in rec {
        devShell = pkgs.mkShell {
          buildInputs = [
            # add packages here, like
            # pkgs.clingo
          ];
        };
      }));
}