[MacPorts] #43516: dot2tex patch to accomodate pyparsing changes

[MacPorts]

#43516: dot2tex patch to accomodate pyparsing changes
----------------------+--------------------------------
 Reporter:  p.bro@…   |      Owner:  macports-tickets@…
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.2.1
 Keywords:  haspatch  |       Port:  dot2tex
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 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.

-- 
Ticket URL: <https://trac.macports.org/ticket/43516>
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