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`registry_user_subkeys` ended its walk on any non-zero return and reported what it had as the answer. Only one of those returns means "that was all of them"; the rest mean the walk stopped early — a `wsl --unregister` running right now, a Store install rewriting `Lxss` underneath it — and a failure at the very first index came back as `Some(vec![])`, an authoritative "there are no distros". The sweep that feeds the shell menu keeps the last good list only when the probe says `None`, so that empty answer erased the user's distros for the length of the TTL, with no error anywhere and no `wsl -l -q` to catch it: the fallback only runs when the key will not open at all. The walk now says nothing unless it reached the end. `State` is now read too, the way Windows Terminal reads it. A `DistributionName` is not a promise that the distro can be entered: an install that was cancelled half way, a failed `--import`, one being uninstalled as we look, all leave the key behind. `wsl -l -q`, which this replaced, never listed those; without the filter they arrive in the shell menu and open a pane that dies of a WSL registration error. A key with no `State` at all is still taken at its word, which is the conservative direction — inventing one would hide working distros, which is the mistake `Modern = 1` would have been. That also makes `registry_user_dword` production code rather than a `cfg(test)` copy of `registry_user_string`'s FFI scaffolding kept alive for one assertion. The timing test now skips when the registry has nothing to read: on a machine with no `Lxss` key the listing is *supposed* to go to `wsl.exe` and wait, so timing it there failed the test on exactly the machines the fallback is for. And hoisting `LXSS` had left `default_wsl_distro`'s doc comment attached to the const; it goes back on the function.
tty7
A terminal workbench: persistent sessions, remote work, agents.
Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty
English · 简体中文
Why
- Performance — ~2× the throughput of Alacritty, Ghostty, or Kitty (benchmarks)
- Persistent sessions — quit or reboot; your shells and supported agent sessions keep running, no tmux
- Editor-grade input — suggestions, completion, highlighting, history search
- Remote development — files, repos, panes, and git data stay on the remote machine
- Native SSH — profiles, SFTP, port forwarding, and jump hosts
- Agent-aware — Claude Code, Codex & co.: status, notifications, git context
- CLI + Skills — agents create panes, run commands, and inspect output
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 libraries bundled |
What's inside
| Editor-grade 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 |
| Agent-aware | per-pane detection (18 CLIs): status dot · notifications · branch + diff · resume after reboot · tray icon when input is needed |
| Remote workspaces | remote files, repos, changes, diffs, worktrees, tabs, and panes · reconnect from any client and continue where you left off |
| CLI + Skills | bundled tty7 CLI · agent skill · pane/workspace control · real PTY commands · output, process, port, and agent status |
| SSH | native russh stack: profiles with keychain secrets · SFTP panel · port forwarding · jump hosts · one-time, unprivileged tty7-server install |
Terminal and keybinding reference: docs/features.md. The agent-facing CLI interface is documented in skills/tty7/SKILL.md.
Install the skill with:
npx skills add l0ng-ai/tty7
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 I/O — 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 server 11 MB.
Methodology and one-command reproduction: scripts/bench/.
Built on gpui and alacritty_terminal · Apache-2.0 · Discord · Changelog