ARM64 macOS下用Poetry/Pip安装Pydantic遇架构及编译错误求助

问题1：Pydantic架构不兼容导入错误 #

使用Poetry安装Pydantic后运行时出现如下导入错误：

E   ImportError: dlopen(/Users/sazzad/Library/Caches/pypoetry/virtualenvs/my-test-project-qHFD2Grb-py3.9/lib/python3.9/site-packages/pydantic/__init__.cpython-39-darwin.so, 0x0002): tried: '/Users/sazzad/Library/Caches/pypoetry/virtualenvs/my-test-project-qHFD2Grb-py3.9/lib/python3.9/site-packages/pydantic/__init__.cpython-39-darwin.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64')), '/System/Volumes/Preboot/Cryptexes/OS/Users/sazzad/Library/Caches/pypoetry/virtualenvs/my-test-project-qHFD2Grb-py3.9/lib/python3.9/site-packages/pydantic/__init__.cpython-39-darwin.so' (no such file), '/Users/sazzad/Library/Caches/pypoetry/virtualenvs/my-test-project-qHFD2Grb-py3.9/lib/python3.9/site-packages/pydantic/__init__.cpython-39-darwin.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64'))

问题2：手动编译安装Pydantic时的Rust缺失错误 #

尝试在Poetry虚拟环境中执行以下命令重新安装：

pip uninstall pydantic && python3.9 -m pip install --no-binary :all: pydantic --nocache-dir

得到如下错误：

creating build/lib.macosx-10.9-universal2-cpython-39/maturin
            copying maturin/__init__.py -> build/lib.macosx-10.9-universal2-cpython-39/maturin
            copying maturin/import_hook.py -> build/lib.macosx-10.9-universal2-cpython-39/maturin
            copying maturin/__main__.py -> build/lib.macosx-10.9-universal2-cpython-39/maturin
            running egg_info
            creating maturin.egg-info
            writing maturin.egg-info/PKG-INFO
            writing dependency_links to maturin.egg-info/dependency_links.txt
            writing requirements to maturin.egg-info/requires.txt
            writing top-level names to maturin.egg-info/top_level.txt
            writing manifest file 'maturin.egg-info/SOURCES.txt'
            reading manifest file 'maturin.egg-info/SOURCES.txt'
            reading manifest template 'MANIFEST.in'
            warning: no files found matching '*.json' under directory 'src/python_interpreter'
            writing manifest file 'maturin.egg-info/SOURCES.txt'
            running build_ext
            running build_rust
            error: can't find Rust compiler
          
            If you are using an outdated pip version, it is possible a prebuilt wheel is available for this package but pip is not able to install from it. Installing from the wheel would avoid the need for a Rust compiler.
          
            To update pip, run:
          
                pip install --upgrade pip
          
            and then retry package installation.
          
            If you did intend to build this package from source, try installing a Rust compiler from your system package manager and ensure it is on the PATH during installation. Alternatively, rustup (available at https://rustup.rs) is the recommended way to download and update the Rust compiler toolchain.
            [end of output]
          
        note: This error originates from a subprocess, and is likely not a problem with pip.
        ERROR: Failed building wheel for maturin
      Failed to build maturin
      ERROR: Could not build wheels for maturin, which is required to install pyproject.toml-based projects
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

解决思路 #

• 优先安装ARM64预编译wheel，避免源码编译：
  1. 升级pip到最新版本，确保能正确识别ARM64架构的预编译包：

     pip install --upgrade pip
     

  2. 重新用Poetry安装Pydantic，或直接用pip强制重装：

     pip install pydantic --force-reinstall --no-cache-dir
     

• 若必须源码编译：
  安装Rust工具链，完成后重启终端确保Rust在系统PATH中，再重新执行编译安装命令。
• 验证Python与系统架构一致性：
  执行以下命令确认当前Python是ARM64版本：

  python3 -c "import platform; print(platform.machine())"
  

  若输出不是arm64，需重新安装适配ARM64的Python版本，再重建Poetry虚拟环境。
• 清理旧虚拟环境重新安装：
  1. 删除现有Poetry虚拟环境：

     poetry env remove python3.9
     

  2. 重新创建虚拟环境并安装依赖：

     poetry env use python3.9
     poetry install
     

内容的提问来源于stack exchange，提问作者Sazzad