this derivation will be built:
  /nix/store/gxqgw2gfk42qifi6ialk6jp40aiasp4z-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/gxqgw2gfk42qifi6ialk6jp40aiasp4z-bcachefs-module-7.0.0-39-generic.drv'...