dot2tex patch to accomodate pyparsing changes

[p-bro]

dot2tex stopped working for me with the following error:

Traceback (most recent call last):
  File "/opt/local/bin/dot2tex", line 2, in <module>
    from dot2tex.dot2tex import main
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dot2tex/__init__.py", line 36, in <module>
    import dot2tex as d2t
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dot2tex/dot2tex.py", line 47, in <module>
    import dotparsing
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dot2tex/dotparsing.py", line 26, in <module>
    from pyparsing import  (Literal, CaselessLiteral, Word, Upcase, OneOrMore, ZeroOrMore,
ImportError: cannot import name _noncomma 

This is due to changes in the pyparsing module. However, _noncomma is not actually used, and so the easy fix is to remove this in the import. The original author has corrected this bug in ​https://github.com/kjellmf/dot2tex/commit/d189780361b862cdabe4f3499269ad30aa3e1337#diff-abe89aaefb3d77955a9c662a17c1d7d0 (other changes are mostly whitespace). Unfortunately that patch is not yet part of a released version of dot2tex.

I have created a patch that removes the unused _noncomma, and attached the rev-bumped Portfile and the patch. The resulting dot2tex-2.8.7-2 works for me.

[p-bro]

As an aside: The last released dot2tex version is from 2009. The code has since moved to github ​https://github.com/kjellmf/dot2tex with a number of patches. Apparently a new release is in the making (see ​https://github.com/kjellmf/dot2tex/commits/master) so it might be worthwhile monitoring github...

[mf2k (Frank Schima)]

In the future, please Cc the port maintainers (port info --maintainers dot2tex).

[p-bro]

Darn, I thought that was done automatically. Sorry about that.

[nerdling (Jeremy Lavergne)]

Patched in r119537.

[cooljeanius (Eric Gallager)]

Cc Me!