this derivation will be built:
  /nix/store/rgh7k8pgzh583zdgjlyf09z6mmn2r6bz-nix-shell.drv
this path will be fetched (1.1 MiB download, 5.8 MiB unpacked):
  /nix/store/7caidz837014g6rz56l3ak421crrbhjy-composer-2.10.3