Tom Boucher 46bae2f9ff fix(#2624): write the .gsd-source marker before staging reads it (#2811)
* test(#2624): failing-first regression for stale .gsd-source marker read-before-write

Adds failing-first regression proving a Claude-global upgrade currently lets
staging read a stale prior-version .gsd-source marker before install() rewrites
it. Pre-seeds a stale marker pointing at a still-existing fake source, spies on
findInstallSourceRoot to capture which source staging resolves, and asserts
staging never resolves the stale path. Also covers fresh-install and ghost-marker
negative space.

* fix(#2624): write the .gsd-source marker before staging reads it

A Claude-global upgrade silently installed skill content from the PREVIOUS
version. findInstallSourceRoot prefers <configDir>/.gsd-source, and install()
used to rewrite that marker AFTER staging had already read it — so on an
upgrade the marker still pointed at the prior version's source (an npx cache
dir that still exists on disk) and every converted skill was generated from
the OLD commands/gsd, with generateManifest then recording the stale content's
hash as correct.

Extract the marker write into _writeGsdSourceMarker(runtime, targetDir, src,
isGlobal) and call it BEFORE the staging pass (before the _isSkillsRuntime
branch), preserving the original sourceMarkerFile && isGlobal guard, the
half-published-package existsSync guard, and the non-fatal write-failure warn.
This closes the read-before-write hole for every findInstallSourceRoot
consumer (skills, commands, /gsd-surface, capability-state) in one move.

Long-standing (marker write added in ee6f3b70c / #1477, already in v1.7.0);
triggers on any Claude-global upgrade where skill content changed and the
prior source path still exists (the common npx-persistent-cache case).

* test(#2624): use t.mock.method for process.exit/console per CONTRIBUTING rules

Address code-review finding: replace manual process.exit/console monkeypatch
and try/finally in the #2624 test helpers with t.mock.method (auto-restored),
matching CONTRIBUTING.md test conventions and the t.mock.method idiom used
elsewhere in the suite.

* docs(changeset): #2624 install-source-root-stale-marker

* docs(changeset): backfill #2624 PR number to 2811
2026-07-28 23:09:10 -04:00

GSD Core

Git. Ship. Done.

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A light-weight meta-prompting, context engineering, and spec-driven development system for Claude Code, OpenCode, Antigravity CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more.

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What is GSD Core

GSD Core is a context-engineering and spec-driven development framework that drives AI coding agents (Claude Code, Codex, Antigravity CLI, Kimi CLI, Copilot, Cursor, and more) through a disciplined phase loop. It solves context rot — the quality degradation that accumulates as an AI fills its context window — by running all heavy research, planning, and execution work in fresh-context subagents while keeping your main session lean.


How it works

Each milestone repeats the same five-step loop, one phase at a time:

  1. Discuss — capture implementation decisions before anything is planned
  2. Plan — research, decompose, and verify the plan fits a fresh context window
  3. Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
  4. Verify — walk through what was built; diagnose and fix before declaring done
  5. Ship — create the PR, archive the phase, repeat for the next one

Quickstart

npx @opengsd/gsd-core@latest

The installer prompts for your runtime (Claude Code, OpenCode, Antigravity CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more) and whether to install globally or locally. The installer is required for cross-runtime compatibility — do not copy files from agents/ or commands/ directly.

On another runtime or without Node.js? See Install on your runtime.

Once installed, start a new project or onboard an existing repo:

/gsd-new-project   # greenfield project
/gsd-onboard       # existing codebase

New here? Follow Your first project for a guided walkthrough from install to first shipped phase, or Onboarding an existing codebase for brownfield setup.


Documentation

What's new in 1.7.0 → docs/whats-new-1.7.0.md

Tutorials — learning by doing:

How-to guides — task-focused recipes:

Reference — authoritative facts:

Explanation — concepts and design decisions:

Full index: docs/README.md. Other languages: 日本語 · 한국어 · Português · 简体中文.


Why it works

Most AI-coding setups fail at scale because context bloat silently degrades output quality, there is no shared memory between sessions, and nothing verifies that code actually works. GSD Core solves all three: heavy work runs in fresh subagents, structured artifacts like STATE.md and CONTEXT.md survive session boundaries, and the verify step walks through what was built and generates fix plans before a phase is declared done. See docs/explanation/context-engineering.md for the full reasoning.

Troubleshooting? See docs/how-to/recover-and-troubleshoot.md.


Community

Project Platform
gsd-opencode Original OpenCode port
Discord Community support

Star History

Star History Chart

License

MIT License. See LICENSE for details.


Claude Code is powerful. GSD Core makes it reliable.

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