pip 19 breaks install about diffengine HOT 14 CLOSED

This has gone on long enough. I guess we'll just fork it.

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Yes, it does look like the python3 support was merged, but it was never pushed to PyPI. I guess I can open a ticket on the htmldiff repository to ask for a new release. I'm not sure @mitsuhiko will notice it here...

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I actually forgot about --process-dependency-links when I was re-creating my environment with pip v19.3.1. I noticed that I get a build error about failing to remove htmldiff's build directory:

ERROR: Failed cleaning build dir for htmldiff

... but that the tests pass just fine, as they also do on Travis (which doesn't do --process-dependency-links).

So I wonder if we can remove that part of the diffengine documentation?

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I failed to install it via pip3 install --process-dependency-links diffengine on osx 10.14.6 and python 3.7.5. (And I guess travis does not use the latest pip version.) Shall I investigate further?

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Sorry, I guess I wasn't clear. Try without the --process-dependency-links.

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That didn't work either.

Collecting htmldiff==0.2 (from diffengine)
  Could not find a version that satisfies the requirement htmldiff==0.2 (from diffengine) (from versions: 0.1)
No matching distribution found for htmldiff==0.2 (from diffengine)

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Oh, I was actually doing a pip install -r requirements.txt which is what Travis does as well. But this isn't useful for people who don't have a git clone of the repo--which is most people.

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Maybe this is tilting at windmills, but the solution I'd like to aim for here is to get htmldiff in shape so it can be installed properly.

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Tell me how I can help you to fix htmldiff.

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diffengine usings python3 and there was a small problem with htmldiff that prevented it from running on python3 edsu/htmldiff@a2ae66b

If that problem has been fixed upstream diffengine's requirements can just be pointed at that, and I believe --process-dependency-links can go away. Would you be willing to check on that?

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@mitsuhiko can you release a new version to the PyPi repo https://pypi.org/project/htmldiff/ ? @edsu I guess this would fix the problem?

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@edsu how about integrate the htmldiff source directly? For the license check https://github.com/mitsuhiko/htmldiff/blob/master/LICENSE

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Still broken, fyi.

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@weitzman it would be helpful if you could also comment over on mitsuhiko/htmldiff#7 to try to move this along without us forking or copying the code.

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