this derivation will be built:
  /nix/store/4qxxsa742i9g89x5j6mipyc49dpkdj2a-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/4qxxsa742i9g89x5j6mipyc49dpkdj2a-bcachefs-module-7.0.0-39-generic.drv'...