this derivation will be built:
  /nix/store/9m4gkg2vfbwwri7g2rjg501i0f6rdh36-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/9m4gkg2vfbwwri7g2rjg501i0f6rdh36-bcachefs-module-7.0.0-39-generic.drv'...