these 4 derivations will be built:
  /nix/store/9fxibgfn8qxcfxa0a8pvjyzxmvaz1kps-clan-cli-source.drv
  /nix/store/4f6g8skknvhn5mcwm7s75j5a2x8zdsgr-clan-cli.drv
  /nix/store/6ya18aaka7skli7w2l9nzyj4kvw3n62a-tofu.drv
  /nix/store/k663fq73i15s5w4gpgq25dklq80l9vk6-cache-new.drv