this derivation will be built:
  /nix/store/flvb3jvg112b2lwr3y17hpy32wnp5q7m-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/flvb3jvg112b2lwr3y17hpy32wnp5q7m-bcachefs-module-7.0.0-39-generic.drv'...