this derivation will be built:
  /nix/store/mw4w0ypj09fn3iqg43b2zxfki8xim95z-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/mw4w0ypj09fn3iqg43b2zxfki8xim95z-bcachefs-module-7.0.0-30-generic.drv'...