these 3 derivations will be built:
  /nix/store/1z9jz53s2s9qnyhwsn9nwj51p1lr720p-skills-src-with-lock.drv
  /nix/store/6fzpc1jimaa71fhh31nn6pbhaxqy5ayp-skills-1.7.4.drv
  /nix/store/z8dhsws4qvwakzpikh04rxs9994h1fli-check-skills.drv