this derivation will be built:
  /nix/store/4rmnlq21fzl8av4p7wxyp8imsh6knshw-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/4rmnlq21fzl8av4p7wxyp8imsh6knshw-bcachefs-module-7.0.0-39-generic.drv'...