```
[root@nikszos:~]# nix-env -qaP '*' --description  |grep -i torb
nixos.torbrowser                                                       tor-browser-bundle-bin-9.0.4                                                        Tor Browser Bundle built by torproject.org
nixos.firefoxPackages.tor-browser-7-5                                  tor-browser-unwrapped-7.5.6                                                         A web browser built from TorBrowser source tree
nixos.firefoxPackages.tor-browser                                      tor-browser-unwrapped-8.5.6                                                         A web browser built from TorBrowser source tree
```