this derivation will be built:
  /nix/store/7gyld76fl5j8nnwsvwwy96msz6brxjy5-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/7gyld76fl5j8nnwsvwwy96msz6brxjy5-bcachefs-module-7.0.0-39-generic.drv'...