let
  # Tracking nixpkgs/nixos-25.11 as of 2026-03-02.
  nixpkgsSrc = fetchTarball {
    url = "https://github.com/NixOS/nixpkgs/archive/1267bb4920d0fc06ea916734c11b0bf004bbe17e.tar.gz";
    sha256 = "sha256:0sjac485rc346hpj5dvidh3lqdlq5lp7y7glicibgxqizrb90dpc";
  };
  # Tracking TaskBot main as of 2026-03-02.
  taskbotSrc = fetchTarball {
    url = "https://git.fa-fo.de/rahix/TaskBot/archive/0978ed7b5e86589728d538f0fe72e1a86018b0a5.tar.gz";
    sha256 = "sha256:0x9bw0vbhl8x83jik40qv4ylvp29dl2ixzrkn3l43f5hym5fqjca";
  };

in with import nixpkgsSrc {}; let
  taskbot = pkgs.rustPlatform.buildRustPackage (f: {
    pname = "taskbot";
    version = "main";

    src = taskbotSrc;

    nativeBuildInputs = with pkgs; [
      pkg-config
    ];

    buildInputs = with pkgs; [
      openssl
    ];

    cargoLock.lockFile = "${taskbotSrc}/Cargo.lock";
  });

in pkgs.mkShell {
  name = "taskbot";
  buildInputs = [
    taskbot
  ];
}