在虚拟环境中安装 pip 的问题 - Cargo，Rust package 管理器，未安装或不在 PATH 上

Question

我正在使用 python 虚拟环境来处理项目。 设置我的 venv 并从 git 拉出后，我尝试pip install -r requirements.txt但在下面出现错误。

Collecting orjson==3.5.2
  Using cached orjson-3.5.2.tar.gz (740 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error

  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [6 lines of output]

      Cargo, the Rust package manager, is not installed or is not on PATH.
      This package requires Rust and Cargo to compile extensions. Install it through
      the system's package manager or via https://rustup.rs/

      Checking for Rust toolchain....
      [end of output]

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

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

我正在使用 Python 版本 3.10.2、pip 版本 22.0.4。

知道如何解决这个问题吗？ 我安装了 rust 但没有修复。

将我的虚拟环境移动到本地后，我没有收到以下错误。

Collecting orjson==3.5.2
  Using cached orjson-3.5.2.tar.gz (740 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error

  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [11 lines of output]
      💥 maturin failed
        Caused by: Cargo metadata failed. Does your crate compile with `cargo build`?
        Caused by: `cargo metadata` exited with an error: error: failed to run `rustc` to learn about target-specific information

      Caused by:
        process didn't exit successfully: `rustc - --crate-name ___ --print=file-names -Z mutable-noalias=yes --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (exit code: 1)
        --- stderr
        error: the option `Z` is only accepted on the nightly compiler
      Error running maturin: Command '['maturin', 'pep517', 'write-dist-info', '--metadata-directory', 'C:\\Users\\jawan\\AppData\\Local\\Temp\\pip-modern-metadata-hjcwzhua', '--interpreter', 'C:\\Users\\jawan\\Desktop\\Programming\\imotor\\Scripts\\python.exe', '--manylinux=off', '--strip=on']' returned non-zero exit status 1.
      Checking for Rust toolchain....
      Running `maturin pep517 write-dist-info --metadata-directory C:\Users\jawan\AppData\Local\Temp\pip-modern-metadata-hjcwzhua --interpreter C:\Users\jawan\Desktop\Programming\imotor\Scripts\python.exe --manylinux=off --strip=on`
      [end of output]

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

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

Answer 1

面临类似的问题。 安装 64 位版本的 python 后一切正常。

Answer 2

上面的错误是由一个rust package引起的

pywinpty

您需要做的就是将其从 requirements.txt 文件中删除并重新部署您的应用程序。