this derivation will be built:
  /nix/store/f0chyjgsgn66rikjc2cwghq47frjr3wk-nix-shell.drv
this path will be fetched (2.5 MiB download, 9.4 MiB unpacked):
  /nix/store/50wcyqghmk0dnhaqdjjlgr5lnf11r1qj-yarn-berry-4-fetcher-1.3.1