these 4 derivations will be built:
  /nix/store/x1bifp4ik7s32j8c14v2qz5haw7pcvm2-clan-cli-source.drv
  /nix/store/j531s522nz67ar7ipn5z2l3qy4yfbm8b-clan-cli.drv
  /nix/store/4pgnplnsdjgi7wz4mg0rhh4vl1bvmnn3-tofu.drv
  /nix/store/33nn0ip0pnm8i7wxcbsshkwm4gpjn4xh-cache-new.drv