this derivation will be built:
  /nix/store/zba7m59nksmy3h4kfnac907lwy9khigk-devshell.drv
these 2 paths will be fetched (0.0 KiB download, 6.2 KiB unpacked):
  /nix/store/0h2nf4jfl6hgsrmi47i8l97caf3xw4pv-devshell-dir
  /nix/store/dvvr4xqbnwpcawm2xw93yv33d5w398db-naked-stdenv