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POtell pip to install the dependencies of packages listed in a requirement file
 

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  1. POtell pip to install the dependencies of packages listed in a requirement file
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    <p>Developing a Django web app, I have a list of packages I need to install in a virtualenv. Say:</p> <pre><code>Django==1.3.1 --extra-index-url=http://dist.pinaxproject.com/dev/ Pinax==0.9b1.dev10 git+git://github.com/pinax/pinax-theme-bootstrap.git@cff4f5bbe9f87f0c67ee9ada9aa8ae82978f9890 # and other packages </code></pre> <p>Initially I installed them manually, one by one, along the development. This installed the required dependencies and I finally used <code>pip freeze</code> before deploying the app.</p> <p>Problem is, as I upgraded some packages, some dependencies are no longer used nor required but they keep being listed by <code>pip freeze</code>.</p> <p>Now, I'd like to set up a new virtualenv this way:</p> <ul> <li>put the needed packages (without their dependencies) in a requirement file, <br /> like <code>manual-requirements.txt</code></li> <li>install them with their dependencies <br /> <code>pip install -r manual-requirement.txt</code> (← problem, this does not install the dependencies)</li> <li>freeze the full virtualenv <br /> <code>pip freeze -r manual-requirements.txt &gt; full-requirements.txt</code><br /> and deploy.</li> </ul> <p>Any way to do this without manually re-installing the packages in a new virtualenv to get their dependencies ? This would be error-prone and I'd like to automate the process of cleaning the virtualenv from no-longer-needed old dependencies.</p> <p><strong>edit:</strong> actually, pip <em>does</em> install dependencies not explicitly listed in the requirement file, even if <a href="http://www.pip-installer.org/en/latest/requirements.html" rel="noreferrer">the documentation</a> tells us that such files are flat. I was wrong about which dependencies i expected to be installed. I'll let this question for anyone in doubt about pip not installing all dependencies. </p>
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    1. USMaxime R.
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      1. USsorin
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    1. COSo... what is the problem exactly? Do you know which are your "first level" dependencies?
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      1. USmac
    2. COYes, I've listed them in manual-requirements.txt. Problem is: pip does not install their dependencies (ie. "second level") if I use a requirement file while they get installed if i manually `pip install django; pip install pinax; etc.`.
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      1. POtell pip to install the dependencies of packages listed in a requirement file
      1. USMaxime R.
    3. COAs long as you use the exact versions of the required packages, there should be no changes in its dependencies. But if you do not use exact versions, how can you guarantee that your application still works?
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      1. USnewtover
 

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