SST v3部署Python Lambda报错“No pyproject.toml found”求解决方案

我正尝试部署一个带有数据聚类功能Python Lambda的SST v3应用，已有两个TypeScript Lambda可正常运行，但Python Lambda持续报错：

Build Error packages/python_functions/src/clustering.handler
↳ failed to run uv sync: exit status 2
error: No `pyproject.toml` found in current directory or any parent directory

我已尝试将pyproject.toml文件放置在项目根目录、packages/python_functions及packages/python_functions/src等不同位置，也试过用requirements.txt替代pyproject.toml，但均出现相同错误。以下是sst配置文件中的相关代码：

clusteringQueue.subscribe({
  handler: "packages/python_functions/src/clustering.handler",
  timeout: "10 minutes",
  runtime: "python3.11",
  environment: {
    SUPABASE_URL: process.env.SUPABASE_URL!,
    SUPABASE_SERVICE_ROLE_KEY: process.env.SUPABASE_SERVICE_ROLE_KEY!,
    OPENAI_API_KEY: process.env.OPENAI_API_KEY!,
  },
});

请问如何正确配置SST v3，使其在部署该Lambda函数时识别并使用pyproject.toml中的Python依赖？

• 指定Python函数的工作目录：在Lambda配置中添加build字段，明确指向pyproject.toml所在的目录。若文件放在packages/python_functions下，配置修改如下：

  clusteringQueue.subscribe({
    handler: "packages/python_functions/src/clustering.handler",
    timeout: "10 minutes",
    runtime: "python3.11",
    environment: {
      SUPABASE_URL: process.env.SUPABASE_URL!,
      SUPABASE_SERVICE_ROLE_KEY: process.env.SUPABASE_SERVICE_ROLE_KEY!,
      OPENAI_API_KEY: process.env.OPENAI_API_KEY!,
    },
    build: {
      cwd: "packages/python_functions",
    },
  });
  

• 保证pyproject.toml格式合规，包含必要的依赖配置，示例结构：

  [project]
  name = "clustering-function"
  version = "0.1.0"
  dependencies = [
    "numpy>=1.26.0",
    "scikit-learn>=1.3.0",
    "openai>=1.3.0",
    "supabase>=2.0.0"
  ]
  
  [tool.uv]
  python-version = "3.11"
  

• 若使用requirements.txt，可通过两种方式适配：
  1. 覆盖默认构建命令，直接用pip安装：

     build: {
       cwd: "packages/python_functions",
       command: "pip install -r requirements.txt -t .sst/build/stage/<stage>/packages/python_functions",
     }
     

  2. 在pyproject.toml中引用requirements.txt：

     [tool.uv.dependencies]
     requirements = "requirements.txt"
     

• 确认项目结构符合SST预期，确保Python函数目录独立，结构示例：

  project-root/
  ├── packages/
  │   ├── python_functions/
  │   │   ├── pyproject.toml
  │   │   └── src/
  │   │       └── clustering.py
  └── sst.config.ts
  

内容的提问来源于stack exchange，提问作者BradDev