Function run

packages/python/src/quirks/prisma.ts:146–379

(ctx: QuirkContext)

export const prismaQuirk: Quirk = {
  dependency: 'prisma',
  async run(ctx: QuirkContext): Promise<QuirkResult> {
    const { venvPath, pythonEnv, workPath } = ctx;
    const pythonPath = getVenvPythonBin(venvPath);

    // The runtime cache dir is where the engine binary and openssl shim
    // will live inside the Lambda bundle.  Derived from resolveVendorDir()
    // so it stays in sync with the vendor directory used by the builder.
    const runtimeCacheDir = join(
      LAMBDA_ROOT,
      resolveVendorDir(),
      'prisma',
      '__bincache__'
    );

    // 1. Find the site-packages directory that actually contains prisma.
    //    getVenvSitePackagesDirs() can return multiple dirs (e.g. virtualenv
    //    with system site-packages); we must operate on the one where prisma
    //    is installed so that cache paths and RECORD patching target the
    //    correct location.
    const sitePackagesDirs = await getVenvSitePackagesDirs(venvPath);
    let sitePackages: string | undefined;
    for (const dir of sitePackagesDirs) {
      try {
        await fs.promises.access(join(dir, 'prisma'));
        sitePackages = dir;
        break;
      } catch {
        // not in this dir
      }
    }
    if (!sitePackages) {
      console.warn(
        'prisma: could not find prisma in any site-packages directory'
      );
      return {};
    }

    // 2. Create cache directory inside prisma package
    const cacheDir = join(sitePackages, 'prisma', '__bincache__');
    await fs.promises.mkdir(cacheDir, { recursive: true });

    const generateEnv = {
      ...pythonEnv,
      PRISMA_BINARY_CACHE_DIR: cacheDir,
    };

    // 3. Write dummy schema to force downloading engine binaries for
    //    the Lambda target platforms via binaryTargets.
    //    Generated output goes to workPath (NOT inside site-packages/prisma/)
    //    to avoid copytree recursion when the generator copies the prisma package.
    const generatedDir = join(workPath, '_prisma_generated');
    const dummySchemaPath = join(workPath, DUMMY_SCHEMA_NAME);
    await fs.promises.writeFile(
      dummySchemaPath,
      buildDummySchema(generatedDir)
    );

    // 4. Run `python -m prisma generate --schema=<dummy>` with