[MacPorts] #30255: Mercurial can be built on python2.7

[MacPorts]

#30255: Mercurial can be built on python2.7
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 Reporter:  macports@…               |       Owner:  macports-tickets@…                   
     Type:  update                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:                                       
Component:  ports                    |     Version:  1.9.2                                
 Keywords:  mercurial python27       |        Port:  devel/mercurial                      
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 Mercurial works with Python 2.4 - 2.7 according to the website. Currently,
 macports is building against Python 2.6, thus bringing in python27 when
 almost everything else has progressed to python27. Building against
 python27 will alleviate the need to keep around two versions of Python.

 I am providing the extremely simple patch to build with the new version. I
 have tested building and using hg on adium repo. There may be a more
 elegant way to allow it to allow building with python26 if that is the
 only version installed, while defaulting to python27 if present or at
 least no other Python version is installed, but I am not a portfile
 expert.

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Ticket URL: <https://trac.macports.org/ticket/30255>
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