$ nix-locate bin/telegram
tdesktop.out                                      1,788 x /nix/store/kb827741q28bf6fjzhf0lzq3bm70qvip-telegram-desktop-1.3.14/bin/telegram-desktop
telegram-cli.out                                    244 x /nix/store/dw8ckpmpdadwfar91i7yg5w7g9i3bh9z-telegram-cli-2016-03-23/bin/telegram-cli
telegram-cli.out                              4,104,496 x /nix/store/dw8ckpmpdadwfar91i7yg5w7g9i3bh9z-telegram-cli-2016-03-23/bin/telegram-wo-key