57cd97a559
Fixes bug #1194807 Firstly, we update the oslo.config dep to 1.2.0a3 because of the issue with namespace packages (bug #1194742). But the main issue here is that if you currently do: $> pip install -r quantum/requirements.txt then you end up with the oslo.config 1.1.1 code installed. This is because oslo.config>=1.1.0 gets pulled in as a transitive dep and pip gets confused. You can reproduce with e.g. $> pip install \ http://.../oslo.config-1.2.0a3.tar.gz#egg=oslo.config-1.2.0a3 \ python-keystoneclient $> pip freeze | grep oslo.config oslo.config-1.2.0a3 $> python -c 'from oslo.config.cfg import DeprecatedOpt' Traceback (most recent call last): File "<string>", line 1, in <module> ImportError: cannot import name DeprecatedOpt This is because of a bug with pip where it sees oslo.config-1.2.0a3 and oslo.config as two unrelated things. It should strip the version part of the egg= fragment before using it as a package name, but it doesn't. However, we can simply use the -f/--find-links pip option in our requirements.txt to add the tarball URL to the list of URLs considered and also add the oslo.config>=1.2.0a3 dependency: $> pip install \ -f http://.../oslo.config-1.2.0a3.tar.gz#egg=oslo.config-1.2.0a3 \ 'oslo.config>=1.2.0a3' \ python-keystoneclient $> pip freeze | grep oslo.config oslo.config-1.2.0a3 $> python -c 'from oslo.config.cfg import DeprecatedOpt' This is actually exactly the semantics we want and we go to great lengths in pbr to get these semantics while using a single tarball URL. The only downside to this --find-links strategy is that we gain an extra line in our requirements.txt ... but it does work around the pip bug. Change-Id: I6f3eb5fd2c75615d9a1cae172aed859b36b27d4c
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