these 3 derivations will be built:
  /nix/store/flvcm4aisxh46495dvbnc31xv367hbjm-source.drv
  /nix/store/cjgwfrkyf2qfl0mxrxv5wywdrkp8jsvy-spec-kit-1.1.0.drv
  /nix/store/y428q4v3sgjs17bajiv67qym5lv19v0k-check-spec-kit.drv