these 3 derivations will be built:
  /nix/store/qdm25v5daaqa6l79g0jiifi78c94502y-source.drv
  /nix/store/ivpv82rmh4ip8mvr3gaz0lgfvbn4swfz-spec-kit-1.3.3.drv
  /nix/store/0q07hbw8nvbg0vszn3wpa907x25dj4l5-check-spec-kit.drv