Question

当我尝试在 Python 3.9.0 虚拟环境中使用 Python Poetry 1.1.4 包管理器 (poetry add cryptography) 安装加密模块时，我得到：

    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    If you are using an outdated pip version, it is possible a prebuilt wheel is available for this package but pip is not able to install from it.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.
    
    This package requires Rust >=1.41.0.
    ----------------------------------------
    ERROR: Failed building wheel for cryptography
  Failed to build cryptography
  ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly

虽然我使用的是 pip 21.0.1（最新），但我对 Python 3.8 没有任何问题。

知道为什么以及如何解决这个问题吗？最新的加密模块信息显示 it's compatible with Python 3.6+。

Answer 1

如果没有 cryptography 可用于您的平台，则较新版本的 wheel 要求 Rust 从 sdist 构建 wheel。

见：https://github.com/pyca/cryptography/issues/5771

无法在 Python 3.9 上使用 Poetry 安装加密包

1 个答案: