fails when there are no families

[Kyle Nitzsche]

dotdepends removes the root pkg node family from the dictionary of families, if there are any families. This is so that the root node is not summarized into a package family in order to make the generated graph clearer, that is, the root pkg node and its dependencies should always be shown.

However, when there are zero families found, dotdepends crashes at the point in code where the root node's family, if any, is removed from the dictionary of families:

$ dotdepends libasound2
libasound2/libasound2-DETAIL.png
Traceback (most recent call last):
  File "/usr/bin/dotdepends", line 267, in <module>
    dot2.summarize(replacement(pkg), out_file=path.join(opt.output_dir, pkg + "-SUMMARY"))
  File "/usr/lib/python2.7/dist-packages/Dotdepends/Dot.py", line 265, in summarize
    fams = self.remove_root_family(fams_with_root, root)
  File "/usr/lib/python2.7/dist-packages/Dotdepends/Dot.py", line 194, in remove_root_family
    del fams[root]
KeyError: 'libasound2'

[Kyle Nitzsche (knitzsche)]

Fixed with 0.3.9