this derivation will be built:
  /nix/store/v3qmw84iy6gs4yhh6zv0ra98fb0whxax-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/v3qmw84iy6gs4yhh6zv0ra98fb0whxax-bcachefs-module-7.0.0-30-generic.drv'...