this derivation will be built:
  /nix/store/1y6vsj6w6q65dzypzcyqvjq95mpmi6v7-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/1y6vsj6w6q65dzypzcyqvjq95mpmi6v7-bcachefs-module-7.0.0-38-generic.drv'...