view tests/hghaveaddon.py @ 6935:954d7ea5cd67 stable tip

stack: when stack base is obsolete, pick any successor, even if at random

There are situations when s0 is obsolete and we also cannot pick just one
successor for it to use in stack. In such a case, let's pick the "latest"
successor from the first set.

We're assuming that obsutil.successorssets() returns data in the same order (it
should, since it makes sure to sort data internally). Keeping that in mind,
while the successor picked for s0 by this code is not based on any sort of
sophisticated logic, it should nonetheless be the same every time.

This patch is probably not going to completely break anything that was
previously working fine, because the previous behavior was to just abort with
an exception.

import hghave

@hghave.check("docgraph-ext", "Extension to generate graph from repository")
def docgraph():
    try:
        import hgext.docgraph
        hgext.docgraph.cmdtable # trigger import
    except ImportError:
        try:
            import hgext3rd.docgraph
            hgext3rd.docgraph.cmdtable # trigger import
        except ImportError:
            return False
    return True

@hghave.check("flake8", "Flake8 python linter")
def has_flake8():
    try:
        import flake8

        flake8.__version__
    except ImportError:
        return False
    else:
        return True

@hghave.check("check-manifest", "check-manifest MANIFEST.in checking tool")
def has_check_manifest():
    return hghave.matchoutput('check-manifest --version 2>&1',
                              br'check-manifest version')

@hghave.check("twine", "twine utility for publishing Python packages")
def has_twine():
    return hghave.matchoutput('twine --help 2>&1',
                              br'usage: twine .*\bcheck\b')

@hghave.check("default-cg3", "changegroup3 by default")
def has_default_changegroup3():
    from mercurial import configitems

    try:
        return configitems.coreitems[b'experimental'][b'changegroup3'].default
    except (AttributeError, KeyError):
        return False