this derivation will be built:
  /nix/store/cy0x691kfd1csgqmj13nv3kmqv09bhk4-bcachefs-module-7.0.0-27-generic.drv
building '/nix/store/cy0x691kfd1csgqmj13nv3kmqv09bhk4-bcachefs-module-7.0.0-27-generic.drv'...