pydantic.error_wrappers.ValidationError: 1 validation error for Lockfile

在编辑构建chipyard环境时，运行./build-setup.sh命令报错。报错信息如下：

(base) oem@core:~/Desktop/chipyard$ ./build-setup.sh riscv-tools
 ========== BEGINNING STEP 1: Conda environment setup ==========
Using lockfile: /home/oem/Desktop/chipyard/conda-reqs/conda-lock-reqs/conda-requirements-riscv-tools-linux-64.conda-lock.yml
Traceback (most recent call last):
  File "/home/oem/miniconda3/bin/conda-lock", line 11, in <module>
    sys.exit(main())
             ^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/click/decorators.py", line 33, in new_func
    return f(get_current_context(), *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/conda_lock/conda_lock.py", line 1497, in click_install
    install(
  File "/home/oem/miniconda3/lib/python3.12/site-packages/conda_lock/conda_lock.py", line 1544, in install
    with _render_lockfile_for_install(
  File "/home/oem/miniconda3/lib/python3.12/contextlib.py", line 137, in __enter__
    return next(self.gen)
           ^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/conda_lock/conda_lock.py", line 988, in _render_lockfile_for_install
    lock_content = parse_conda_lock_file(pathlib.Path(filename))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/conda_lock/lockfile/__init__.py", line 145, in parse_conda_lock_file
    lockfile = lockfile_v1_to_v2(LockfileV1.parse_obj(content))
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/pydantic/main.py", line 1223, in parse_obj
    return cls.model_validate(obj)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/oem/miniconda3/lib/python3.12/site-packages/pydantic/main.py", line 627, in model_validate
    return cls.__pydantic_validator__.validate_python(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.ValidationError: 1 validation error for Lockfile
package.416.optional
  Field required [type=missing, input_value={'dependencies': {'typing...', 'version': '1.10.14'}, input_type=dict]
    For further information visit https://errors.pydantic.dev/2.10/v/missing
build-setup.sh: Build script failed with exit code 1 at step 1: Conda environment setup

pydantic_core._pydantic_core.ValidationError: 1 validation error for Lockfile
package.416.optional
Field required [type=missing, input_value={‘dependencies’: {‘typing…’, ‘version’: ‘1.10.14’}, input_type=dict]
For further information visit https://errors.pydantic.dev/2.10/v/missing
build-setup.sh: Build script failed with exit code 1 at step 1: Conda environment setup

大概就是在说，解析锁定文件（.conda-lock.yml）时，使用的 Pydantic 模型验证失败了。错误信息指出，在处理锁定文件中某个包（package.416）的数据时，缺少必需的字段（optional 字段），导致验证错误。

解决办法：尝试降低 conda-lock的版本，降低到1.4.0版本。具体如下（ubantu下）：

conda-lock --version #查看当前conda-lock的版本
pip uninstall conda-lock #卸载当前版本
pip install conda-lock==1.4.0 #下载1.4.0版本的conda-lock

参考资料：https://discuss.python.org/t/validation-error/27335