如何在部署Heroku时自定义pip的requirements.txt？ [英] How to customize pip's requirements.txt in Heroku on deployment?

问题描述

我正在为Heroku部署一个Python Django应用程序，并且我只想在部署到像Heroku这样的特定环境时自定义requirements.txt文件（通过添加具有密码的git支持的依赖项）。我很想在环境变量中设置它，但我不相信pip具有这样的功能。我的想法是使用Heroku提供的一个钩子来放置一个脚本，该脚本将在依赖关系安装之前添加到我的requirements.txt中。这可能吗？

解决方案

您可以在其他需求文件中包含需求文件。 $ b

 ＃requirements.txt 
 -r需求/ base.txt 
 
＃需求/ base.txt 
 django == 1.6 
 
＃requirements / heroku.txt 
 -r需求/ base.txt 
 djpostgresurlthing == 1.0.0 
 
＃requirements / dev.txt 
 -r要求/ base.txt 
 django-debug-toolbar 
  

我通常在项目的根目录中保留一个 requirements.txt 文件，该文件只包含其他需求文件（通常是prod或基础），并使 requirements / 文件夹与环境特定的东西。所以在本地我会 pip安装-r要求/ dev.txt 和服务器上 pip install -r requirements / prod.txt

对于你的情况与heroku，你需要根requirements.txt为heroku。所以你可以使用这个文件来包含你的heroku需求文件。

$ $ $ $ $ $ $ $＃ heroku.txt

可能有一些告诉heroku使用不同文件的方法。但这将是一个简单的方法来解决它。

I'm deploying a Python Django app to Heroku, and I'd like to customize the requirements.txt file (by adding a git-backed dependency with password) only when I deploy to certain environments like Heroku. I'd love to set this in an environment variable or something, but I don't believe pip has any functionality like that. My idea was to use a hook that Heroku provides to place a script which would add to my requirements.txt before the dependencies are installed. Is that possible?

解决方案

You can include a requirements file in another requirements file.

# requirements.txt    
-r requirements/base.txt

# requirements/base.txt
django==1.6

# requirements/heroku.txt
-r requirements/base.txt
djpostgresurlthing==1.0.0

# requirements/dev.txt
-r requirements/base.txt
django-debug-toolbar

I typically keep a requirements.txt file in the root of the project that just includes other requirements files(usually prod or a base) and make a requirements/ folder with environment specific stuff. So locally I'd pip install -r requirements/dev.txt and on the server pip install -r requirements/prod.txt.

For your case with heroku, you need the root requirements.txt to be for heroku. So you can just use that file to include your heroku requirements file.

# requirements.txt    
-r requirements/heroku.txt

There's probably SOME way to tell heroku to use a different file. But this would be an easy way to get around it.

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