these 3 derivations will be built:
  /nix/store/8pyq5fs3981zg4d9mr9fy9z6p904kc48-source.drv
  /nix/store/zasgnyvmlfqxlmxkdbkl7v2gzk7ki0vw-spec-kit-1.2.0.drv
  /nix/store/nhy85sm39ynwbqx8jz6309x40906rg84-check-spec-kit.drv