doc: integrate graphviz graphs in tutorials Use the mercurial-docgraph extension (https://pypi.python.org/pypi/hg- docgraph/) in tutorials in order to have some dot graphs in the tutorials .t files. Then generate the doc as usual, the sphinx-graphviz extension (http://www .sphinx-doc.org/en/stable/ext/graphviz.html) has been added and it should handle the generation of the graphs. Please be aware that you need the dot binary installed in your system. Please refer to the extension documentation for more configuration.

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import hghave

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@hghave.check("docgraph-ext", "Extension to generate graph from repository")

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def docgraph():

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    try:

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        import hgext.docgraph

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        hgext.docgraph.cmdtable # trigger import

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    except ImportError:

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        try:

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            import hgext3rd.docgraph

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            hgext3rd.docgraph.cmdtable # trigger import

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        except ImportError:

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            return False

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    return True