So glad you're looking into it, Jelmer, thanks. Wish I could offer
some useful thoughts. I'm cheering you on to victory.

On Sun, 11 Jun 2023 at 21:45, Jelmer Vernooij
<email address hidden> wrote:
>
> This looks like a type issue that happens because Python 3 is stricter
> than Python 2 was:
>
> > /home/jelmer/src/breezy/brz-3.3.2/breezy/bzr/index.py(670)_find_index()
> -> result = bisect_right(range_map, key) - 1
> (Pdb) p range_map
> [((), (b'Arch-1:csardi@guzu%igraph--main--0.4--patch-164',)), ((b'Arch-1:csardi@guzu%igraph--main--0.4--patch-63',), (b'Arch-1:<email address hidden>%igraph--main--0.2--patch-109',)), ((b'Arch-1:<email address hidden>%igraph--main--0.2--patch-130',), (b'Arch-1:<email address hidden>%igraph--main--0.2--patch-165',)), ((b'Arch-1:<email address hidden>%igraph--main--0.2--patch-212',), (b'Arch-1:<email address hidden>%igraph--main--0.2--patch-37',)), ((b'Arch-1:<email address hidden>%igraph--main--0.4--patch-172',), (b'Arch-1:<email address hidden>%igraph--main--0.4--patch-207',)), ((b'Arch-1:<email address hidden>%igraph--main--0.6--patch-125',), (b'Arch-1:<email address hidden>%igraph--main--0.6--patch-160',)), ((b'Arch-1:<email address hidden>%igraph--main--0.6--patch-60',), (b'Arch-1:<email address hidden>%igraph--main--0.6--patch-96',)), ((b'Arch-1:csardi@shanna%igraph--main--0.2--patch-3',), (b'Arch-1:csardi@szaffi%igraph--main--0.2--patch-130',)), ((b'Arch-1:csardi@szaffi%igraph--main--0.2--patch-147',), (b'Arch-1:csardi@szaffi%igraph--main--0.2--patch-227',)), ((b'Arch-1:csardi@szaffi2%igraph--main--0.5--patch-257',), (b'Arch-1:csardi@szaffi2%igraph--main--0.5--patch-81',)), ((b'csardi@csardi-desktop-20100617141041-nndb4vxuix76wmbk',), (b'csardi@strider-20100618143323-ry24wclpgs1wcffy',))]
> (Pdb) p key
> ((b'Arch-1:csardi@shanna%igraph--main--0.2--patch-3',), b'')
>
> It looks like the () is inserted for the header of the index, but it's
> not clear to me why this works in other situations.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/2016003
>
> Title:
>   TypeError: '<' not supported between instances of 'bytes' and 'tuple'
>   on upgrade
>
> Status in Breezy:
>   New
>
> Bug description:
>   With breezy 3.3.2 installed from pip:
>
>
>   $ python3 -m breezy branch https://code.launchpad.net/\~igraph/igraph/0.6-Rquery
>   $ cd 0.6-Rquery
>   $ python3 -m breezy upgrade
>   conversion error: '<' not supported between instances of 'bytes' and 'tuple'
>   brz: ERROR: TypeError: '<' not supported between instances of 'bytes' and 'tuple'
>
>   Traceback (most recent call last):
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/commands.py", line 1036, in exception_to_return_code
>       return the_callable(*args, **kwargs)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/commands.py", line 1228, in run_bzr
>       ret = run(*run_argv)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/commands.py", line 779, in run_argv_aliases
>       return self.run(**all_cmd_args)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/commands.py", line 804, in run
>       return class_run(*args, **kwargs)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/builtins.py", line 3915, in run
>       raise exceptions[0]
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/upgrade.py", line 285, in _convert_items
>       cv = Convert(control_dir=control_dir, format=format)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/upgrade.py", line 65, in __init__
>       self.convert()
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/upgrade.py", line 107, in convert
>       self.controldir = converter.convert(self.controldir, None)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/bzrdir.py", line 1788, in convert
>       converter.convert(repo, pb)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/repository.py", line 1679, in convert
>       self.source_repo.copy_content_into(converted)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/repository.py", line 649, in copy_content_into
>       return InterRepository.get(self, destination).copy_content(revision_id)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/repository.py", line 1573, in copy_content
>       self.target.fetch(self.source, revision_id=revision_id)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/vf_repository.py", line 982, in fetch
>       return inter.fetch(revision_id=revision_id,
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/vf_repository.py", line 2763, in fetch
>       self._fetch_all_revisions(revision_ids, pb)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/vf_repository.py", line 2706, in _fetch_all_revisions
>       basis_id = self._fetch_batch(batch, basis_id, cache)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/vf_repository.py", line 2573, in _fetch_batch
>       self._fetch_parent_invs_for_stacking(parent_map, cache)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/vf_repository.py", line 2539, in _fetch_parent_invs_for_stacking
>       parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/knit.py", line 1321, in get_parent_map
>       return self._get_parent_map_with_sources(keys)[0]
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/knit.py", line 1340, in _get_parent_map_with_sources
>       new_result = source.get_parent_map(missing)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/knit.py", line 3194, in get_parent_map
>       for node in nodes:
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/knit.py", line 3137, in _get_entries
>       for node in self._graph_index.iter_entries(keys):
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/index.py", line 1399, in iter_entries
>       for node in index.iter_entries(keys):
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/index.py", line 752, in iter_entries
>       return (result[1] for result in bisect_multi.bisect_multi_bytes(
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bisect_multi.py", line 50, in bisect_multi_bytes
>       search_results = content_lookup(search_keys)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/index.py", line 850, in _lookup_keys_via_location
>       index = self._parsed_key_index(key)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/index.py", line 702, in _parsed_key_index
>       return self._find_index(self._parsed_key_map, search_key)
>     File "/home/dev/.local/lib/python3.9/site-packages/breezy/bzr/index.py", line 670, in _find_index
>       result = bisect_right(range_map, key) - 1
>   TypeError: '<' not supported between instances of 'bytes' and 'tuple'
>
>   brz 3.3.2 on python 3.9.2 (Linux-5.10.0-21-amd64-x86_64-with-glibc2.31)
>   arguments: ['/home/dev/.local/lib/python3.9/site-packages/breezy/__main__.py',
>       'upgrade']
>   plugins: bash_completion[3.3.2], changelog_merge[3.3.2],
>       commitfromnews[3.3.2], cvs[3.3.2], darcs[3.3.2], email[3.3.2],
>       fastimport[3.3.2], flake8[unknown], fossil[3.3.2], github[3.3.2],
>       gitlab[3.3.2], hg[3.3.2], launchpad[3.3.2], mtn[3.3.2],
>       netrc_credential_store[3.3.2], news_merge[3.3.2], po_merge[3.3.2],
>       propose[3.3.2], pypi[3.3.2], quilt[unknown], repodebug[3.3.2],
>       rewrite[unknown], stats[3.3.2], svn[3.3.2], upload[3.3.2],
>       weave_fmt[3.3.2], webdav[3.3.2], zsh_completion[3.3.2]
>   encoding: 'utf-8', fsenc: 'utf-8', lang: 'C.UTF-8'
>
>   *** Breezy has encountered an internal error.  This probably indicates a
>       bug in Breezy.  You can help us fix it by filing a bug report at
>           https://bugs.launchpad.net/brz/+filebug
>       including this traceback and a description of the problem.
>   Upgrading branch /tmp/0.6-Rquery/ ...
>   starting upgrade of /tmp/0.6-Rquery/
>   making backup of /tmp/0.6-Rquery/.bzr
>     to /tmp/0.6-Rquery/backup.bzr.~1~
>   starting repository conversion
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/brz/+bug/2016003/+subscriptions
>