evolve: support successors of ancestor of orphan with multiple roots The previous code checked that the set of successors has a single root. However, there’s no reason to require that in general. Example: o 6 | o 5 |\ | o 4 | | o | 3 |/ | * 2 | | | x 1 |/ o 0 1 is obsoleted by 3, 4 and 6. We are considering the case when 2 gets evolved. The roots are [3, 4] and the heads are [6]. Before the change, the user was asked which destination to choose, but there was only one choice (6). After the change, 6 is chosen as the destination.

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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