this derivation will be built:
  /nix/store/x8fdncfxwn2rbw1c6w3gjwnxx4sif43p-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/x8fdncfxwn2rbw1c6w3gjwnxx4sif43p-bcachefs-module-7.0.0-39-generic.drv'...