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A remote tty7-server was installed as `tty7-server-<version>`, and one stat of that path decided whether anything got installed at all. The version string is not an identity: every build between releases carries the same one, so a client speaking control v3 found the released v2 binary sitting at the exact path it looks for, skipped the install, adopted a server it cannot talk to, and died in the handshake with no way out. `check_running_build` compared the same string and so never even probed. Name the file after the two numbers that actually decide compatibility — `tty7-server-c<control>p<protocol>` — and after uploading, ask the binary what it speaks and publish it only if the answer matches the name it is about to get. That turns "the filename is the dialect" from a convention into a fact a stale bundle or an older release tag cannot break, and surfaces an architecture mismatch at install time rather than as `Exec format error` inside a later daemon launch. The keep-or-restart prompt offered "Keep Sessions" for a state where keeping means the connect fails a moment later; it now offers Cancel. A handshake that does fail gets a Restart Server button, gated on that one error so no other connect failure can reach a destructive action that would not fix it.
tty7
A terminal workbench: shells, sessions, SSH, coding agents.
Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty
English · 简体中文
Why
- Fast — ~2× the throughput of Alacritty, Ghostty, or Kitty (benchmarks)
- Sessions persist — quit or reboot; your shells keep running, no tmux
- Editor-grade input — completion, syntax highlighting, history search built in; zero config for zsh, bash, fish, PowerShell
- Agent-aware — recognizes Claude Code & co. in a pane: status, notifications, session resume
Install
Native builds for each platform on Releases:
| macOS | …-macos-arm64.dmg · …-x86_64.dmg |
drag into Applications |
| Windows | …-setup.exe · portable ….zip |
|
| Linux | …-x86_64.AppImage |
chmod +x and run — x11/wayland libs bundled |
What's inside
| Input | ghost suggestions from history · explained tab completion · syntax highlighting · multi-line editing · click places the caret · ⌃ R fuzzy history |
| Window | tabs & splits · ⌘ P palette · ⌘ F scrollback search · nine themes · IME |
| Coding agents | per-pane agent detection (~17 CLIs): status dot, notifications, branch + diff, resume after reboot, tray icon that signals "needs your input" |
| SSH | native russh stack: profiles with keychain secrets, SFTP panel, port forwarding, jump hosts |
Details for every row: docs/features.md. Keybindings: ⌘ , opens Settings — browse and remap everything, tmux preset included (full list).
Benchmarks
Same machine, same day, same 155×40 grid — Apple M1 Pro, macOS 26.3.1, five-run averages (2026-07-04):
| tty7 | Alacritty | Ghostty | Kitty | |
|---|---|---|---|---|
Plaintext IO — 11 MB cat (lower = better) |
95 ms | 239 ms | 179 ms | 185 ms |
| DOOM-fire frame rate (higher = better) | 888 fps | 485 fps | 552 fps | 617 fps |
| Cold-launch memory | 116 MB¹ | 105 MB | 128 MB | 130 MB |
¹ GUI 105 MB + the persistent daemon 11 MB.
Methodology and one-command reproduction: scripts/bench/.
Built on gpui and alacritty_terminal · Apache-2.0 · Discord · Changelog