this derivation will be built:
  /nix/store/qj3z4mwgyxymj2hx0wd698f7k3dal83x-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/qj3z4mwgyxymj2hx0wd698f7k3dal83x-bcachefs-module-7.0.0-39-generic.drv'...