this derivation will be built:
  /nix/store/3gvakpj42jr7c4hrk99vqbzk1lvn8j8a-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/3gvakpj42jr7c4hrk99vqbzk1lvn8j8a-bcachefs-module-7.0.0-39-generic.drv'...