this derivation will be built:
  /nix/store/4a2amny314r2pxll0m0sc5r79rrwvzjh-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/4a2amny314r2pxll0m0sc5r79rrwvzjh-bcachefs-module-7.0.0-39-generic.drv'...