Bug report

Bug summary

I'm trying to install matplotlib-2.2.4 on a system which doesn't have internet access. I downloaded the matplotlib sources from PyPI, but the installation gets stuck when trying to download jquery-ui.

#11246 (comment) by @tacaswell seems to indicate that the PyPI source tarball should already have jquery-ui vendored. I do indeed see the jquery-ui sources in that tarball, but those don't actually get installed by setup.py so it still tries to download jquery-ui anyway.

Code for reproduction

pip install --verbose --no-binary :all: 'matplotlib==2.2.4'

Actual outcome

[...lots of console output, nothing mentioning jquery-ui at all...]
    byte-compiling /usr/local/src/sage-config/local/lib/python2.7/site-packages/matplotlib/tri/triinterpolate.py to triinterpolate.pyc
    byte-compiling /usr/local/src/sage-config/local/lib/python2.7/site-packages/matplotlib/tri/tricontour.py to tricontour.pyc
    error: Failed to download jquery-ui.  Please download https://jqueryui.com/resources/download/jquery-ui-1.12.1.zip and extract it to /usr/local/src/sage-config/local/lib/python2.7/site-packages/matplotlib/backends/web_backend/.

Expected outcome

setup.py should install the vendored copy of jquery-ui instead of downloading it.

Matplotlib version

• Operating system: Linux
• Matplotlib version: 2.2.4
• Python version: 2.7.15

Downloaded from https://files.pythonhosted.org/packages/1e/20/2032ad99f0dfe0f60970941af36e8d0942d3713f442bb3df37ac35d67358/matplotlib-2.2.4.tar.gz