this derivation will be built:
  /nix/store/arc8h9vs6zmysx9i8rzbl15i1yfpq75q-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/arc8h9vs6zmysx9i8rzbl15i1yfpq75q-bcachefs-module-7.0.0-38-generic.drv'...