this derivation will be built:
  /nix/store/hfszvhx78g4ik6fgbm2da61vnsmacfqa-bcachefs-module-7.0.0-28-generic.drv
building '/nix/store/hfszvhx78g4ik6fgbm2da61vnsmacfqa-bcachefs-module-7.0.0-28-generic.drv'...