these 3 derivations will be built:
  /nix/store/4qxrpci8z6bskpw49ka0f7d28aiqsgb5-source.drv
  /nix/store/90sswp8md5gmdgd4iw2l1zhyjdgvp3bx-spec-kit-1.3.3.drv
  /nix/store/9i14d3ff4ddkifz89wh8y8b5hbwpvq6x-check-spec-kit.drv