this derivation will be built:
  /nix/store/8mfpwiyd38lqqi23qq0n7haaxxlg8lif-devshell.drv
these 2 paths will be fetched (0.0 KiB download, 30.4 KiB unpacked):
  /nix/store/9ygr74f73fqd9lkk00mcn8asb744xpij-devshell-dir
  /nix/store/h38i8afbli4w1rclraflg51ypm9rb2pm-naked-stdenv