flake.nix

{
  description = "A very basic flake";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-24.05";

    flakebox = {
      url = "github:rustshop/flakebox";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flakebox, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        flakeboxLib = flakebox.lib.${system} { };

        rustSrc = flakeboxLib.filterSubPaths {
          root = builtins.path {
            name = "flakebox-tutorial";
            path = ./.;
          };
          paths = [
            "Cargo.toml"
            "Cargo.lock"
            ".cargo"
            "src"
          ];
        };

        legacyPackages = (flakeboxLib.craneMultiBuild { }) (craneLib':
          let
            craneLib = (craneLib'.overrideArgs {
              pname = "flakebox-tutorial";
              src = rustSrc;
            });
          in
          rec {
            workspaceDeps = craneLib.buildWorkspaceDepsOnly { };
            workspaceBuild = craneLib.buildWorkspace {
              cargoArtifacts = workspaceDeps;
            };
            flakebox-tutorial = craneLib.buildPackage { };
          });
      in
      {
        inherit legacyPackages;
        packages.default = legacyPackages.flakebox-tutorial;
        devShells = flakeboxLib.mkShells {
          packages = [ ];
        };
      });
}