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Check if pip has __version__
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@ -28,8 +28,8 @@ def build_docs():
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# Upgrade pip because installation of sphinx with pip 1.1 available on Travis
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# is broken (see #207) and it doesn't support the show command.
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import pip
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print('pip version: {} {}'.format(pip.__version__, LooseVersion(pip.__version__) < LooseVersion('1.5.4')))
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if LooseVersion(pip.__version__) < LooseVersion('1.5.4'):
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if not '__version__' in dir(pip) or \
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LooseVersion(pip.__version__) < LooseVersion('1.5.4'):
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print("Updating pip")
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check_call(['pip', 'install', '--upgrade', 'pip==1.5.4'])
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# Install Sphinx and Breathe.
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