fix(workspace): keep generated versions/* out of the root pnpm workspace

AGENTS.md

@@ -106,6 +106,12 @@ Every package supports these scripts:
 
 Version configuration lives in `config/versions.json` — maps PG versions (13-17) to their `libpg-query`, `pgsql-parser`, `pgsql-deparser`, and `@pgsql/types` versions plus npm dist-tags.
 
+`prepare-versions` writes into `packages/{parser,deparser}/versions/`, which is gitignored and
+**not** part of the root pnpm workspace — each generated tree gets its own `pnpm-workspace.yaml`,
+so run `pnpm install` inside `versions/` before building them (see `PUBLISH.md`). Adding those
+directories back to the root `pnpm-workspace.yaml` makes the root `pnpm-lock.yaml` depend on
+whether a machine has run the generator, which means every install rewrites it.
+
 ### CLI Development
 
 | Package | Script | Description |

PUBLISH.md

@@ -75,6 +75,15 @@ The `generate-packages` script (`scripts/generate-version-packages.ts`):
 - Uses the template from `config/deparser-versions.json`
 - Creates version-specific packages in `packages/deparser/versions/`
 - Sets up proper dependencies and npm tags for each PostgreSQL version
+- Writes a `pnpm-workspace.yaml` into `versions/`, making the generated tree its
+  own workspace (it is gitignored, so it is deliberately not part of the root one)
+
+#### Install Dependencies
+```bash
+# Once per generation — covers every version directory
+cd packages/deparser/versions
+pnpm install
+```
 
 #### Build and Publish Individual Versions
 ```bash
@@ -106,6 +115,7 @@ cd packages/deparser
 
 # Prepare all versions
 npm run prepare-versions
+(cd versions && pnpm install)
 
 # Build and publish each version
 for version in versions/*/; do
@@ -132,6 +142,15 @@ This script (`scripts/prepare-versions.ts`):
 - Creates version-specific directories in `packages/parser/versions/`
 - Generates `package.json`, `tsconfig.json`, and source files for each PostgreSQL version
 - Each version gets its own libpg-query dependency and npm tag
+- Writes a `pnpm-workspace.yaml` into `versions/`, making the generated tree its
+  own workspace (it is gitignored, so it is deliberately not part of the root one)
+
+#### Install Dependencies
+```bash
+# Once per generation — covers every version directory
+cd packages/parser/versions
+pnpm install
+```
 
 #### Build and Publish Individual Versions
 ```bash
@@ -155,6 +174,7 @@ cd packages/parser
 
 # Prepare all versions
 npm run prepare-versions
+(cd versions && pnpm install)
 
 # Build and publish each version
 for version in versions/*/; do

packages/deparser/scripts/generate-version-packages.ts

@@ -94,6 +94,15 @@ function generateVersionPackages(): void {
   console.log('Generating package.json files for each version...\n');
 
   const { rootConfig, localConfig } = loadConfigs();
+
+  // The generated tree is gitignored, so it is its own pnpm workspace rather than
+  // a member of the root one: root membership would depend on whether this script
+  // has been run, and pnpm would rewrite the root lockfile accordingly.
+  fs.mkdirSync(VERSIONS_DIR, { recursive: true });
+  fs.writeFileSync(
+    path.join(VERSIONS_DIR, 'pnpm-workspace.yaml'),
+    "packages:\n  - '*'\n"
+  );
 
   for (const [pgVersion, versionInfo] of Object.entries(rootConfig.versions)) {
     // Skip versions that don't have pgsql-deparser

packages/parser/scripts/prepare-versions.ts

@@ -15,6 +15,14 @@ if (!fs.existsSync(versionsDir)) {
   fs.mkdirSync(versionsDir, { recursive: true });
 }
 
+// The generated tree is gitignored, so it is its own pnpm workspace rather than
+// a member of the root one: root membership would depend on whether this script
+// has been run, and pnpm would rewrite the root lockfile accordingly.
+fs.writeFileSync(
+  path.join(versionsDir, 'pnpm-workspace.yaml'),
+  "packages:\n  - '*'\n"
+);
+
 // Generate version-specific packages
 const pgVersions = Object.keys(rootConfig.versions);