jpmschweitzerandClaude Opus 4.7
8074bf4201
`forkpty` calls `fork()` underneath. `fork()` in a multithreaded process is unsafe: only the calling thread survives in the child, but libc locks held by other threads remain "locked forever." With the multi-threaded Dart VM as parent, ~5% of spawns deadlocked in the child before `execve` (forensic probe: child stuck in S state with comm=`DartWorker`, master fd never sees POLLIN). `posix_spawn` uses `vfork` on glibc/musl/macOS, keeping the parent suspended until execve completes — no Dart code runs in the child. Pty pair built via the POSIX-standard `posix_openpt` / `grantpt` / `unlockpt` / `ptsname` sequence. Probed: zero hangs in 300 sequential spawns vs ~5% before. Behavior change: missing executable / missing workingDirectory now surface as a `PtyException` thrown by `NativePty.start` rather than a diagnostic written from the child to the slave PTY. Cleaner error path for callers. Side benefit: drops the `libutil.so.1` dynamic-library dependency. PTY now resolves entirely against libc via `DynamicLibrary.process()`. Splits the library-level `@Tags(['forkpty'])` on session_test.dart into a per-test tag, so the now-runnable-under-flutter-test cases contribute to coverage. `dart_test.yaml` declares the tag so the exclude-tags filters honor it. Drops the `retry: 2` workaround from the formerly-flaky registry test. D-5 amended. Trims session-introduced CHANGELOG entries that were over-verbose for the Keep-a-Changelog format. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
clide
An IDE for Claude Code CLI. Native rendering, terminal-first interaction, pql-powered queries, canvas and graph surfaces. Linux and macOS.
Architecture
Single Flutter package at the repo root. The app hosts everything in-process: IPC server, subsystem handlers (pane, files, editor, git, pql), and the extension framework. tmux owns Claude session persistence.
lib/— all Dart code. Kernel services (theme, i18n, settings, panels, commands, focus), UI widgets, built-in extensions, and the extension contract.ptyc/— small C helper. Spawns a PTY + child and hands the master fd back overSCM_RIGHTS. Every pane (shell, tmux, claude, LSP, debug adapter) goes through it.- pql — external supporter tool. Clide wraps it for every query surface; never re-implements it.
Claude drives the UI through a clide CLI surface (Bash, not MCP). Every CLI subcommand has a UI affordance and every UI action has a CLI equivalent.
Built-in extensions
canvas, claude, claude_control, decisions, diff, editor, extensions_ui, files, git, graph, grammars_core, ipc_status, keybindings_ui, markdown, pql, problems, settings_ui, terminal, theme_picker, tickets, todos, welcome.
Building
Requires Flutter (stable channel) on the host. One-time setup:
make hooks && flutter pub get
Then:
make run # launch the desktop app
make test # fast suite: analyze + format + unit + widget + golden
make test-core # core subsystem tests (IPC, PTY, git, pane registry)
make test-integration # real app boot integration tests
make build-linux # flutter build linux
make build-macos # flutter build macos
make ptyc-build # build the ptyc PTY-spawn helper
make push-check # pre-push gate: decisions + core + fast tests
Status
Pre-v2.0 (2.0.0-dev). Interaction model and panel system landed. The Python Textual v1.2.0 predecessor is archived under legacy/.
Design doc: docs/initial-plan.md. Architectural decisions: decisions/.
License
MIT. See LICENSE.