this derivation will be built:
  /nix/store/6rvmv1zc730cyw3dql83280qm48kqqmm-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/6rvmv1zc730cyw3dql83280qm48kqqmm-bcachefs-module-7.0.0-38-generic.drv'...