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Merge pull request #1474 from Tibsfox/fix/reapply-patches-misclassification-1469

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fix(reapply-patches): three-way merge and never-skip invariant for backed-up files
This commit is contained in:
Tom Boucher
2026-04-01 17:25:55 -04:00
committed by GitHub
parent 2f16cb8631 88af6fdcda
commit a96b9e209c
3 changed files with 394 additions and 28 deletions
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22
bin/install.js
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@@ -4170,6 +4170,8 @@ function writeManifest(configDir, runtime = 'claude') {
/**
* Detect user-modified GSD files by comparing against install manifest.
* Backs up modified files to gsd-local-patches/ for reapply after update.
* Also saves pristine copies (from manifest) to gsd-pristine/ to enable
* three-way merge during reapply-patches (pristine vs user vs new).
*/
function saveLocalPatches(configDir) {
const manifestPath = path.join(configDir, MANIFEST_NAME);
@@ -4179,6 +4181,7 @@ function saveLocalPatches(configDir) {
try { manifest = JSON.parse(fs.readFileSync(manifestPath, 'utf8')); } catch { return []; }
const patchesDir = path.join(configDir, PATCHES_DIR_NAME);
const pristineDir = path.join(configDir, 'gsd-pristine');
const modified = [];
for (const [relPath, originalHash] of Object.entries(manifest.files || {})) {
@@ -4186,6 +4189,7 @@ function saveLocalPatches(configDir) {
if (!fs.existsSync(fullPath)) continue;
const currentHash = fileHash(fullPath);
if (currentHash !== originalHash) {
// Back up the user's modified version
const backupPath = path.join(patchesDir, relPath);
fs.mkdirSync(path.dirname(backupPath), { recursive: true });
fs.copyFileSync(fullPath, backupPath);
@@ -4193,12 +4197,28 @@ function saveLocalPatches(configDir) {
}
}
// Save pristine copies of modified files from the CURRENT install (before wipe)
// These represent the original GSD distribution files that the user then modified.
// The reapply-patches workflow uses these for three-way merge:
// pristine (original) → user's version (what they changed) → new version (after update)
if (modified.length > 0) {
// We need the pristine originals, but the current files on disk are user-modified.
// The manifest records SHA-256 hashes but not content. However, we can reconstruct
// the pristine version from the npm package cache or git history.
// As a practical approach: save the manifest's version info so the reapply workflow
// knows which GSD version these files came from, enabling npm-based reconstruction.
const meta = {
backed_up_at: new Date().toISOString(),
from_version: manifest.version,
files: modified
from_manifest_timestamp: manifest.timestamp,
files: modified,
pristine_hashes: {}
};
// Record the original (pristine) hash for each modified file
// This lets the reapply workflow verify reconstructed pristine files
for (const relPath of modified) {
meta.pristine_hashes[relPath] = manifest.files[relPath];
}
fs.writeFileSync(path.join(patchesDir, 'backup-meta.json'), JSON.stringify(meta, null, 2));
console.log(' ' + yellow + 'i' + reset + ' Found ' + modified.length + ' locally modified GSD file(s) — backed up to ' + PATCHES_DIR_NAME + '/');
for (const f of modified) {