this derivation will be built:
  /nix/store/ka4a0kvvnzfrw4dbrs9n5br7p491zp1w-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/ka4a0kvvnzfrw4dbrs9n5br7p491zp1w-bcachefs-module-7.0.0-34-generic.drv'...