this derivation will be built:
  /nix/store/r2x4708cwnrp5ar5sa1cfq839816s4kj-bcachefs-module-7.1.2-arch2-1.drv
building '/nix/store/r2x4708cwnrp5ar5sa1cfq839816s4kj-bcachefs-module-7.1.2-arch2-1.drv'...