this derivation will be built:
  /nix/store/bl645wcw25642lwm1mc5nhrzhl2jwq3c-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/bl645wcw25642lwm1mc5nhrzhl2jwq3c-bcachefs-module-7.0.0-38-generic.drv'...