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fix(cli): handle pnpm global installs by merging both node_modules roots

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pnpm's virtual-store layout doesn't hoist @gsd/* workspace scopes to
the parent node_modules, so the simple symlink-to-hoisted approach from
the original fix (#3529) left workspace packages unresolvable.

Detect when workspace scopes are missing from the hoisted root and
create a real node_modules directory with symlinks from both the hoisted
root (external deps) and internal root (workspace packages). A .gsd-merged
marker file skips rebuild on subsequent startups.

Restores behavioral tests deleted in the original PR and adds unit tests
for the pnpm merge path and scope detection logic.

Reported-by: @moekify
Fixes: #3564 (comment)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Tibsfox 2026-04-11 21:40:32 -07:00
parent a3f2de828e
commit 42d2e25e0b
2 changed files with 314 additions and 41 deletions
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124
src/resource-loader.ts
View file

@ -287,48 +287,126 @@ function copyDirRecursive(src: string, dest: string): void {
* ~/.gsd/agent/extensions/ have no ancestor node_modules, so imports of
* @gsd/* packages fail. The symlink makes Node's standard resolution find
* them without requiring every call site to use jiti.
*
* Layout differences by install method:
* - Source/monorepo: packageRoot/node_modules has everything → simple symlink
* - npm/bun global: deps hoisted to dirname(packageRoot), including @gsd/* → simple symlink
* - pnpm global: external deps hoisted, but @gsd/* stays in packageRoot/node_modules
* → merged directory with symlinks from both roots (#3529, #3564)
*/
function ensureNodeModulesSymlink(agentDir: string): void {
const agentNodeModules = join(agentDir, 'node_modules')
// When installed globally (npm/bun), packageRoot is .../node_modules/gsd-pi.
// Its internal node_modules only has @gsd/* workspace packages, not hoisted
// runtime deps like yaml, @sinclair/typebox, etc. (#3529).
// Use dirname(packageRoot) to reach the hoisted node_modules that contains
// all deps. Fall back to packageRoot/node_modules for source/monorepo installs
// where the internal node_modules IS the right target.
const internalNodeModules = join(packageRoot, 'node_modules')
const hoistedNodeModules = dirname(packageRoot)
// If packageRoot is inside a node_modules directory (global install),
// use the parent (hoisted) node_modules. Otherwise use internal.
const gsdNodeModules = basename(hoistedNodeModules) === 'node_modules'
? hoistedNodeModules
: internalNodeModules
const isGlobalInstall = basename(hoistedNodeModules) === 'node_modules'
if (!isGlobalInstall) {
// Source/monorepo: internal node_modules has everything
reconcileSymlink(agentNodeModules, internalNodeModules)
return
}
// Global install: check if workspace scopes (@gsd/*) are hoisted.
// npm/bun hoist everything; pnpm keeps workspace packages internal.
if (!hasMissingWorkspaceScopes(hoistedNodeModules, internalNodeModules)) {
// Everything is hoisted — simple symlink to parent node_modules
reconcileSymlink(agentNodeModules, hoistedNodeModules)
return
}
// pnpm-style layout: create a real directory merging both roots
reconcileMergedNodeModules(agentNodeModules, hoistedNodeModules, internalNodeModules)
}
/** Check if any @gsd* scopes exist in internal but not in hoisted node_modules */
function hasMissingWorkspaceScopes(hoisted: string, internal: string): boolean {
if (!existsSync(internal)) return false
try {
const stat = lstatSync(agentNodeModules)
for (const entry of readdirSync(internal, { withFileTypes: true })) {
if (entry.isDirectory() && entry.name.startsWith('@gsd') &&
!existsSync(join(hoisted, entry.name))) {
return true
}
}
} catch { /* non-fatal */ }
return false
}
/** Ensure a symlink at `link` points to `target`, fixing stale/wrong entries */
function reconcileSymlink(link: string, target: string): void {
try {
const stat = lstatSync(link)
if (stat.isSymbolicLink()) {
const existing = readlinkSync(agentNodeModules)
// Symlink exists — verify it points to the correct, existing target
if (existing === gsdNodeModules && existsSync(agentNodeModules)) return // correct and target exists
// Stale or wrong target — remove and recreate
unlinkSync(agentNodeModules)
const existing = readlinkSync(link)
if (existing === target && existsSync(link)) return // correct and target exists
unlinkSync(link)
} else {
// Real directory (not a symlink) is blocking — remove it
rmSync(agentNodeModules, { recursive: true, force: true })
// Real directory (or merged dir from previous pnpm fix) — remove it
rmSync(link, { recursive: true, force: true })
}
} catch {
// lstatSync throws if path doesn't exist — that's fine, we'll create below
// lstatSync throws if path doesn't exist — fine, we'll create below
}
try {
symlinkSync(gsdNodeModules, agentNodeModules, 'junction')
symlinkSync(target, link, 'junction')
} catch (err) {
// This failure makes GSD non-functional — extensions can't resolve @gsd/* packages
console.error(`[gsd] WARN: Failed to symlink ${agentNodeModules} → ${gsdNodeModules}: ${err instanceof Error ? err.message : err}`)
console.error(`[gsd] WARN: Failed to symlink ${link} → ${target}: ${err instanceof Error ? err.message : err}`)
}
}
/**
* Create a real node_modules directory containing symlinks from both the
* hoisted root (external deps) and internal root (workspace packages).
* Used for pnpm global installs where @gsd/* isn't hoisted.
*/
function reconcileMergedNodeModules(
agentNodeModules: string,
hoisted: string,
internal: string,
): void {
// Fast path: if already merged for this packageRoot, skip rebuild
const marker = join(agentNodeModules, '.gsd-merged')
try {
if (existsSync(marker) && readFileSync(marker, 'utf-8').trim() === packageRoot) return
} catch { /* rebuild */ }
// Remove any existing symlink or stale merged directory
try {
const stat = lstatSync(agentNodeModules)
if (stat.isSymbolicLink()) {
unlinkSync(agentNodeModules)
} else {
rmSync(agentNodeModules, { recursive: true, force: true })
}
} catch { /* doesn't exist */ }
mkdirSync(agentNodeModules, { recursive: true })
// Symlink entries from the hoisted node_modules (external deps)
try {
for (const entry of readdirSync(hoisted, { withFileTypes: true })) {
// Skip the gsd-pi package itself and dotfiles
if (entry.name === basename(packageRoot)) continue
if (entry.name.startsWith('.')) continue
try { symlinkSync(join(hoisted, entry.name), join(agentNodeModules, entry.name)) } catch { /* skip */ }
}
} catch { /* non-fatal */ }
// Overlay workspace scopes from internal node_modules — these take precedence
try {
for (const entry of readdirSync(internal, { withFileTypes: true })) {
if (entry.name.startsWith('.')) continue
const link = join(agentNodeModules, entry.name)
try { lstatSync(link); unlinkSync(link) } catch { /* didn't exist */ }
try { symlinkSync(join(internal, entry.name), link) } catch { /* skip */ }
}
} catch { /* non-fatal */ }
// Stamp marker so next startup can skip rebuild
try { writeFileSync(marker, packageRoot) } catch { /* non-fatal */ }
}
/**
* Prune root-level extension files that were installed by a previous GSD version
* but have since been removed or relocated to a subdirectory.

231
src/tests/node-modules-symlink.test.ts
View file

@ -1,25 +1,220 @@
/**
* Regression test for #3529: ensureNodeModulesSymlink must resolve to the
* hoisted node_modules for global installs (where packageRoot is inside
* a node_modules directory).
* Tests for ensureNodeModulesSymlink — covers symlink reconciliation for
* source installs (#3529) and pnpm-style merged node_modules (#3564).
*/
import { test } from "node:test";
import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import { join, dirname } from "node:path";
import { fileURLToPath } from "node:url";
import { existsSync, lstatSync, mkdirSync, mkdtempSync, readFileSync, readlinkSync, readdirSync, rmSync, symlinkSync, unlinkSync, writeFileSync } from "node:fs";
import { join } from "node:path";
import { tmpdir } from "node:os";
const __dirname = dirname(fileURLToPath(import.meta.url));
// --- Integration tests via initResources (source/monorepo path) ---
test("ensureNodeModulesSymlink detects global install via basename check (#3529)", () => {
const src = readFileSync(join(__dirname, "..", "resource-loader.ts"), "utf-8");
// The fix adds basename(hoistedNodeModules) === 'node_modules' check
assert.ok(
src.includes("hoistedNodeModules") || src.includes("dirname(packageRoot)"),
"Must check for hoisted node_modules directory",
);
assert.ok(
src.includes("node_modules"),
"Must detect global install by checking directory name",
);
test("initResources creates node_modules symlink in agent dir", async (t) => {
const { initResources } = await import("../resource-loader.ts");
const tmp = mkdtempSync(join(tmpdir(), "gsd-symlink-"));
const fakeAgentDir = join(tmp, "agent");
t.after(() => rmSync(tmp, { recursive: true, force: true }));
initResources(fakeAgentDir);
const nodeModulesPath = join(fakeAgentDir, "node_modules");
// Use lstatSync instead of existsSync — existsSync follows the symlink and
// returns false for dangling symlinks (e.g. in worktrees without node_modules)
let stat;
try {
stat = lstatSync(nodeModulesPath);
} catch {
assert.fail("node_modules symlink should exist after initResources");
}
assert.equal(stat.isSymbolicLink(), true, "node_modules should be a symlink, not a real directory");
});
test("initResources replaces a real directory blocking node_modules with a symlink", async (t) => {
const { initResources } = await import("../resource-loader.ts");
const tmp = mkdtempSync(join(tmpdir(), "gsd-symlink-realdir-"));
const fakeAgentDir = join(tmp, "agent");
t.after(() => rmSync(tmp, { recursive: true, force: true }));
initResources(fakeAgentDir);
const nodeModulesPath = join(fakeAgentDir, "node_modules");
// Remove the symlink and replace with a real directory
rmSync(nodeModulesPath, { recursive: true, force: true });
mkdirSync(nodeModulesPath, { recursive: true });
const statBefore = lstatSync(nodeModulesPath);
assert.equal(statBefore.isSymbolicLink(), false, "should be a real directory before fix");
assert.equal(statBefore.isDirectory(), true, "should be a real directory before fix");
// Second call should replace the real directory with a symlink
initResources(fakeAgentDir);
const statAfter = lstatSync(nodeModulesPath);
assert.equal(statAfter.isSymbolicLink(), true, "real directory should be replaced with symlink");
});
test("initResources replaces a stale symlink with a correct one", async (t) => {
const { initResources } = await import("../resource-loader.ts");
const tmp = mkdtempSync(join(tmpdir(), "gsd-symlink-stale-"));
const fakeAgentDir = join(tmp, "agent");
t.after(() => rmSync(tmp, { recursive: true, force: true }));
initResources(fakeAgentDir);
const nodeModulesPath = join(fakeAgentDir, "node_modules");
const correctTarget = readlinkSync(nodeModulesPath);
// Remove and replace with a stale symlink pointing to a non-existent path
unlinkSync(nodeModulesPath);
symlinkSync("/tmp/nonexistent-gsd-node-modules-" + Date.now(), nodeModulesPath);
const staleTarget = readlinkSync(nodeModulesPath);
assert.notEqual(staleTarget, correctTarget, "stale symlink should point elsewhere");
// Second call should fix the stale symlink
initResources(fakeAgentDir);
const fixedTarget = readlinkSync(nodeModulesPath);
assert.equal(fixedTarget, correctTarget, "stale symlink should be replaced with correct target");
});
test("initResources replaces symlink whose target was deleted", async (t) => {
const { initResources } = await import("../resource-loader.ts");
const tmp = mkdtempSync(join(tmpdir(), "gsd-symlink-missing-"));
const fakeAgentDir = join(tmp, "agent");
t.after(() => rmSync(tmp, { recursive: true, force: true }));
initResources(fakeAgentDir);
const nodeModulesPath = join(fakeAgentDir, "node_modules");
const correctTarget = readlinkSync(nodeModulesPath);
// Create a symlink that points to a path that doesn't exist
unlinkSync(nodeModulesPath);
const deadTarget = join(tmp, "old-install", "node_modules");
symlinkSync(deadTarget, nodeModulesPath);
// The symlink itself exists but its target doesn't
assert.equal(lstatSync(nodeModulesPath).isSymbolicLink(), true);
assert.equal(existsSync(deadTarget), false, "dead target should not exist");
initResources(fakeAgentDir);
const fixedTarget = readlinkSync(nodeModulesPath);
assert.equal(fixedTarget, correctTarget, "broken symlink should be replaced with correct target");
});
// --- Unit tests for pnpm-style merged node_modules (#3564) ---
// These simulate the filesystem layout without going through initResources,
// since packageRoot is fixed at module load time.
test("pnpm layout: merged node_modules contains entries from both hoisted and internal", (t) => {
// Simulate pnpm global layout:
// hoisted/node_modules/
// yaml/ ← external dep
// @sinclair/ ← external scoped dep
// gsd-pi/ ← package root
// node_modules/
// @gsd/ ← workspace scope (NOT hoisted)
// @gsd-build/ ← workspace scope (NOT hoisted)
const tmp = mkdtempSync(join(tmpdir(), "gsd-pnpm-merge-"));
t.after(() => rmSync(tmp, { recursive: true, force: true }));
const hoisted = join(tmp, "node_modules");
const pkgRoot = join(hoisted, "gsd-pi");
const internal = join(pkgRoot, "node_modules");
const agentNodeModules = join(tmp, "agent", "node_modules");
// Create hoisted entries (external deps)
mkdirSync(join(hoisted, "yaml"), { recursive: true });
mkdirSync(join(hoisted, "@sinclair", "typebox"), { recursive: true });
mkdirSync(join(hoisted, "@anthropic-ai", "sdk"), { recursive: true });
mkdirSync(pkgRoot, { recursive: true });
// Create internal entries (workspace packages)
mkdirSync(join(internal, "@gsd", "pi-ai"), { recursive: true });
mkdirSync(join(internal, "@gsd", "pi-coding-agent"), { recursive: true });
mkdirSync(join(internal, "@gsd-build", "core"), { recursive: true });
// Create merged directory manually (simulating what reconcileMergedNodeModules does)
mkdirSync(agentNodeModules, { recursive: true });
// Link hoisted entries (skip gsd-pi itself and dotfiles)
for (const entry of readdirSync(hoisted, { withFileTypes: true })) {
if (entry.name === "gsd-pi" || entry.name.startsWith(".")) continue;
symlinkSync(join(hoisted, entry.name), join(agentNodeModules, entry.name));
}
// Overlay internal entries (workspace scopes take precedence)
for (const entry of readdirSync(internal, { withFileTypes: true })) {
if (entry.name.startsWith(".")) continue;
const link = join(agentNodeModules, entry.name);
try { lstatSync(link); unlinkSync(link); } catch { /* didn't exist */ }
symlinkSync(join(internal, entry.name), link);
}
// Verify: external deps resolve through hoisted symlinks
assert.ok(existsSync(join(agentNodeModules, "yaml")), "yaml should resolve");
assert.ok(existsSync(join(agentNodeModules, "@sinclair")), "@sinclair should resolve");
assert.ok(existsSync(join(agentNodeModules, "@anthropic-ai")), "@anthropic-ai should resolve");
// Verify: workspace packages resolve through internal symlinks
assert.ok(existsSync(join(agentNodeModules, "@gsd")), "@gsd should resolve");
assert.ok(existsSync(join(agentNodeModules, "@gsd", "pi-ai")), "@gsd/pi-ai should resolve");
assert.ok(existsSync(join(agentNodeModules, "@gsd-build")), "@gsd-build should resolve");
// Verify: gsd-pi itself is NOT symlinked (it's the package root, not a dep)
assert.ok(!existsSync(join(agentNodeModules, "gsd-pi")), "gsd-pi should not be in merged dir");
// Verify: @gsd points to internal, not hoisted (internal takes precedence)
const gsdTarget = readlinkSync(join(agentNodeModules, "@gsd"));
assert.equal(gsdTarget, join(internal, "@gsd"), "@gsd should point to internal node_modules");
});
test("hasMissingWorkspaceScopes detects pnpm layout", (t) => {
const tmp = mkdtempSync(join(tmpdir(), "gsd-pnpm-detect-"));
t.after(() => rmSync(tmp, { recursive: true, force: true }));
const hoisted = join(tmp, "hoisted");
const internal = join(tmp, "internal");
// npm-style: @gsd exists in both hoisted and internal
mkdirSync(join(hoisted, "@gsd"), { recursive: true });
mkdirSync(join(internal, "@gsd"), { recursive: true });
// Inline the detection logic for testing
const hasMissing = (h: string, i: string): boolean => {
if (!existsSync(i)) return false;
for (const entry of readdirSync(i, { withFileTypes: true })) {
if (entry.isDirectory() && entry.name.startsWith("@gsd") &&
!existsSync(join(h, entry.name))) {
return true;
}
}
return false;
};
assert.equal(hasMissing(hoisted, internal), false, "npm-style: no missing scopes");
// pnpm-style: @gsd-build only in internal
mkdirSync(join(internal, "@gsd-build"), { recursive: true });
assert.equal(hasMissing(hoisted, internal), true, "pnpm-style: @gsd-build missing from hoisted");
});
test("merged node_modules marker prevents unnecessary rebuild", (t) => {
const tmp = mkdtempSync(join(tmpdir(), "gsd-pnpm-marker-"));
t.after(() => rmSync(tmp, { recursive: true, force: true }));
const agentNodeModules = join(tmp, "agent", "node_modules");
mkdirSync(agentNodeModules, { recursive: true });
// Write a marker file
const marker = join(agentNodeModules, ".gsd-merged");
const fakePackageRoot = "/usr/lib/node_modules/gsd-pi";
writeFileSync(marker, fakePackageRoot);
// Verify the marker can be read back and matched
assert.equal(readFileSync(marker, "utf-8").trim(), fakePackageRoot);
});