在Alpine中安装python3软件包时出错 [英] Error when installing python3 packages in alpine

问题描述

我目前正在从Alpine：3.7构建图像。

我遇到两个问题：

• 摆锤（特别是 python-dateutils 软件包）


• service_identity（特别是 attrs 软件包）

我收到的错误是：

找不到满足需求setuptools的版本（来自版本：）找不到setuptools的匹配分发版本。

注意：所有软件包都使用pip下载预先缓存在目录中。 / p>

dockerfile如下所示：

 运行apk add --no -cache --virtual .build-deps< dev软件包> 
&& apk添加--no-cache --update python3 
&& pip3 install --upgrade pip setuptools 
 
 RUN pip3 install -f ./python-packages --no-index -r requirements.txt ./python-packages/pkgs 
 
 .... 
  

dev软件包，例如libffi-dev，libressl-dev等。

解决方案

显然，在使用以下方式升级pip时：

  pip3 install --upgrade pip setuptools 
  

我删除了pip升级和安装工作。现在，我一直在研究在alpine上升级pip的正确方法，并在 github repo 执行此检查：

  if [！ -e / usr / bin / pip];然后ln -s pip3 / usr / bin / pip; fi&& if 
如果[[！ -e / usr / bin / python]];然后ln -sf / usr / bin / python3 / usr / bin / python; fi&& \ 
  

仅在调用<时，请确保引用 pip3 通过在python和系统二进制文件的目录上进行符号链接来实现strong> pip 命令。

I am currently building an image from alpine:3.7.

There are two packages that I am having problems with:

• pendulum (specifically python-dateutils package)
• service_identity (specifically attrs package)

The error that I receive it is:

Could not find a version that satisfies the requirement setuptools (from versions: ) No matching distribution found for setuptools

Note: all packages are pre-cached on a directory using pip download.

The dockerfile looks as follows:

RUN apk add --no-cache --virtual .build-deps <dev packages>
 && apk add --no-cache --update python3
 && pip3 install --upgrade pip setuptools

RUN pip3 install -f ./python-packages --no-index -r requirements.txt ./python-packages/pkgs

....

dev-packages such as libffi-dev, libressl-dev, etc.

解决方案

Apparently when upgrading pip with:

pip3 install --upgrade pip setuptools

I removed pip upgrading and installation worked. Now, I have been researching the correct way to upgrade pip on alpine and found a Dockerfile in a github repo that does this check:

if [ ! -e /usr/bin/pip ]; then ln -s pip3 /usr/bin/pip ; fi && \
if [[ ! -e /usr/bin/python ]]; then ln -sf /usr/bin/python3 /usr/bin/python; fi && \

Which makes sure that pip3 is being referred when calling just pip command by doing a symbolic link on python and system binaries' directories.

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