these 3 derivations will be built:
  /nix/store/g4yffqzpi16lcnhfqbzjmg4iwbxphga9-source.drv
  /nix/store/iwvxifhagmp6m45xc4s2dd42g0070rrn-spec-kit-1.2.6.drv
  /nix/store/w5vhxzhpggb576qzp5s1dgngfrchbb1b-check-spec-kit.drv