this derivation will be built:
  /nix/store/x38hix3v0jar0xhamm91qdhxsz28sw0k-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/x38hix3v0jar0xhamm91qdhxsz28sw0k-bcachefs-module-7.0.0-39-generic.drv'...