this derivation will be built:
  /nix/store/127fwlpg49bipc8isj0g3fwgwslfwnps-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/127fwlpg49bipc8isj0g3fwgwslfwnps-bcachefs-module-7.0.0-31-generic.drv'...