meld no longer works on rhel-7.1. if you try to compare 2 files it gives:
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Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/meld/meldwindow.py", line 616, in <lambda>
    self.append_diff(arg, **kwargs))
  File "/usr/lib/python2.7/site-packages/meld/meldwindow.py", line 678, in append_diff
    paths, merge_output=merge_output, meta=meta)
  File "/usr/lib/python2.7/site-packages/meld/meldwindow.py", line 645, in append_filediff
    doc = filediff.FileDiff(len(files))
  File "/usr/lib/python2.7/site-packages/meld/filediff.py", line 247, in __init__
    self.findbar = findbar.FindBar(self.grid)
  File "/usr/lib/python2.7/site-packages/meld/ui/findbar.py", line 31, in __init__
    settings = GtkSource.SearchSettings()
  File "/usr/lib64/python2.7/site-packages/gi/module.py", line 316, in __getattr__
    return getattr(self._introspection_module, name)
  File "/usr/lib64/python2.7/site-packages/gi/module.py", line 135, in __getattr__
    self.__name__, name))
AttributeError: 'gi.repository.GtkSource' object has no attribute 'SearchSettings'
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