these 3 derivations will be built:
  /nix/store/nk8s0rb0yp0n949dkbaahdkpgmf63vy7-source.drv
  /nix/store/3fxxbl818jzvpgwyqwdzp353k1kym4cw-spec-kit-1.0.10.drv
  /nix/store/d37adaznasjfzxizi2klkr75phk5843b-check-spec-kit.drv