this derivation will be built:
  /nix/store/nmajmcnm6vm6xdq297n14l00y5a1pq2g-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/nmajmcnm6vm6xdq297n14l00y5a1pq2g-bcachefs-module-7.0.0-39-generic.drv'...