The packages available through list-packages that contain "tty" in the name or description are: clipetty, crappy-jsp-mode, file-info, glass-tty-theme, hatty, hima-theme, hyperkitty, ipretty, kkp, latex-pretty-symbols, melancholy-theme, mistty, mkdown, nubox, org-pretty-tags, ppp, pretty-hydra, pretty-mode, pretty-sha-path, pretty-speedbar, pretty-symbols, purty-mode and tabbar-ruler. There is no package "tty". Are you talking about emacs' own shell?