py34-parsing @2.1.2 build failure - known upstream bug

[diazona+macportstrac@…]

Building pyparsing 2.1.2 for Python 3.4 fails with an AttributeError as shown below. According to a couple sources I found, ​https://sourceforge.net/p/pyparsing/bugs/95/ (upstream bug tracker) and ​https://github.com/matplotlib/matplotlib/issues/6399, this is a known incompatibility between this version of pyparsing and Python 3.3/3.4. Reportedly the next version of pyparsing, 2.1.3, contains a fix, but it seems not to be in MacPorts - I just updated the tree to check.

If all this is correct, the obvious fix would be to either add pyparsing 2.1.3 to the tree, or block py34-parsing@2.1.2 and py33-parsing@2.1.2 (if that's possible) until version 2.1.3 can be added.

Traceback follows, excerpted from the attached build log:

:info:build Traceback (most recent call last):
:info:build   File "setup.py", line 9, in <module>
:info:build     from pyparsing import __version__ as pyparsing_version
:info:build   File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-parsing/py34-parsing/work/pyparsing-2.1.2/pyparsing.py", line 3478, in <module>
:info:build     _escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
:info:build   File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-parsing/py34-parsing/work/pyparsing-2.1.2/pyparsing.py", line 948, in setParseAction
:info:build     self.parseAction = list(map(_trim_arity, list(fns)))
:info:build   File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-parsing/py34-parsing/work/pyparsing-2.1.2/pyparsing.py", line 808, in _trim_arity
:info:build     this_line = extract_stack()[-1]
:info:build   File "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-parsing/py34-parsing/work/pyparsing-2.1.2/pyparsing.py", line 793, in extract_stack
:info:build     return [(frame_summary.filename, frame_summary.lineno)]
:info:build AttributeError: 'tuple' object has no attribute 'filename'

[diazona+macportstrac@…]

Build log showing the error

[diazona+macportstrac@…]

Oh wait - this is a duplicate of #51365 and #51364. Somehow my prior searches didn't turn those up. Sorry!

[diazona+macportstrac@…]

I'd note that this is a different build error than that which appears in #49905.

[nerdling (Jeremy Lavergne)]

#49905 didn't really get us much since a good log wasn't provided.

py-parsing @2.1.3 in r148575.

[hapaguy (Brian Kurt Fujikawa)]

Cc Me!