packaging: update dulwich to drop the certifi dependency on Windows The presence of `certifi` causes the system certificate store to be ignored, which was reported as a bug against TortoiseHg[1]. It was only pulled in on Windows because of `dulwich`, which was copied from the old TortoiseHg install scripts, in order to support `hg-git`. This version of `dulwich` raises the minimum `urllib3` to a version (1.25) that does certificate verification by default, without the help of `certifi`[2]. We already bundle a newer version of `urllib3`. Note that `certifi` can still be imported from the user site directory, if installed there. But the installer no longer disables the system certificates by default. [1] https://foss.heptapod.net/mercurial/tortoisehg/thg/-/issues/5825 [2] https://github.com/jelmer/dulwich/issues/1025

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'''

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Examples of useful python hooks for Mercurial.

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'''

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from mercurial import (

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    patch,

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    util,

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)

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def diffstat(ui, repo, **kwargs):

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    """Example usage:

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    [hooks]

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    commit.diffstat = python:/path/to/this/file.py:diffstat

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    changegroup.diffstat = python:/path/to/this/file.py:diffstat

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    """

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    if kwargs.get('parent2'):

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        return

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    node = kwargs['node']

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    first = repo[node].p1().node()

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    if 'url' in kwargs:

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        last = repo.changelog.tip()

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    else:

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        last = node

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    diff = patch.diff(repo, first, last)

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    ui.write(patch.diffstat(util.iterlines(diff)))