pip：升级包，而不升级特定依赖 [英] pip: upgrade package without upgrading particular dependency

问题描述

我的问题非常类似于此问题。但是它的方式不同，如果我正在安装一些包，我只想禁用特定依赖关系的升级而不是所有的依赖关系。我知道有一个标志 - no-deps ，但它会排除所有依赖关系，而不是我只想排除一个。

My question is very much similar to this question. But It differs in a way that if i am installing some package i only want to disable upgrade for a particular dependency not for all dependencies. I know there is a flag --no-deps but it will exclude all dependency rather i just want to exclude one.

这是一个场景：

• 我已经安装了Django 1.4


• 我有 django-rosetta 已安装

• I have Django 1.4 installed
• I have django-rosetta installed

这里是 django-rosetta 最新版本中的依赖关系：

Here are django-rosetta dependencies in latest build:

install_requires=[
    'six >=1.2.0',
    'Django >= 1.3'
]

现在我想升级rosetta pip install -U django-rosetta 。但是它尝试下载并安装 Django 1.5 ，因为在rosetta依赖性 Django> = 1.3 是必需的（而且我不要这样做，因为Django 1.4已经安装）我只想要升级六个包，如果有的话。

Now i want to upgrade rosetta pip install -U django-rosetta. But it tried to download and install Django 1.5 because in rosetta dependency Django >= 1.3 is required (and i don't want it to do this as Django 1.4 is already installed) I only want it to upgrade six package if there is any.

- no-deps 标志将不起作用，因为它将排除六包。另外我还没有使用虚拟环境。有任何建议吗？

--no-deps flag will not work as it will exclude six package also. Also I am not using virtual environment. Any suggestions please?

推荐答案

这样做可以让您更准确：

This works and lets you be more precise:

pip install -U django-rosetta Django==1.4

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