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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Issue1678: IndexError when pushing

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setting up base repo

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  $ hg init a

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  $ cd a

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  $ touch a

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  $ hg ci -Am a

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  adding a

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  $ cd ..

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cloning base repo

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  $ hg clone a b

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  updating to branch default

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  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

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  $ cd b

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setting up cset to push

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  $ hg up null

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  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

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  $ touch a

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different msg so we get a clog new entry

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  $ hg ci -Am b

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  adding a

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  created new head

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pushing

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  $ hg push -f ../a

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  pushing to ../a

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  searching for changes

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  adding changesets

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  adding manifests

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  adding file changes

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  added 1 changesets with 0 changes to 0 files (+1 heads)

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  $ cd ..