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l0ng-ai
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On Linux, `"theme_follow_system": true` made the app panic on launch with `RefCell already borrowed` from gpui's Wayland/X11 client, on both backends. Once a user turned "sync with system" on, the setting persisted and every subsequent launch died — a hard brick until `config.json` was hand-edited back. gpui's Linux backends dispatch a window's appearance-changed callback while the platform client's `RefCell` is already mutably borrowed: both XDP handlers hold `client.borrow_mut()` across `set_appearance`, which invokes the callback synchronously. `cx.window_appearance()` re-borrows that same cell. Our appearance observer called straight into `apply_theme` → `effective_preset_id` → `system_dark` → `cx.window_appearance()`, so it re-entered that borrow and panicked. Only while following the system: with the setting off the observer returns before reading the appearance, which is why the default install was fine. It reproduced on *every* launch because the XDG portal source emits one appearance event during startup. Cache the OS appearance in a `SystemAppearance` global instead. The observer fills it from `Window::appearance()` — the window's own cell, released before the callback runs — and `system_dark` reads the cache, so no platform read happens on the re-entrant path. macOS still re-seeds the cache from the platform right after `apply_theme` releases the native appearance pin, since the window reports the pin rather than the OS setting until then. Zed keeps a `SystemAppearance` global for the same reason, and gpui-component switched to `window.appearance()` over the same Linux panic (longbridge/gpui-component#104). Fixes #179
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 · eight 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/.
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