bzr bd fails in C locale

[Steve Langasek]

bzr bd in oneiric has recently started to fail when run in a C locale (such as in a pristine build chroot). This used to work just fine, now it gives the following error:

$ bzr bd -- -uc -us -B
Building using working tree
Building package in merge mode
Looking for a way to retrieve the upstream tarball
bzr: ERROR: exceptions.UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 5: ordinal not in range(128)

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 946, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 1150, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 699, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.7/dist-packages/bzrlib/commands.py", line 721, in run
    return self._operation.run_simple(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/cleanup.py", line 135, in run_simple
    self.cleanups, self.func, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/cleanup.py", line 165, in _do_with_cleanups
    result = func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/builddeb/cmds.py", line 427, in run
    builder.export()
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/builddeb/builder.py", line 75, in export
    self.distiller.distill(self.target_dir)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/builddeb/source_distiller.py", line 79, in distill
    self._distill(target)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/builddeb/source_distiller.py", line 120, in _distill
    tarballs = self.upstream_provider.provide(parent_dir)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/builddeb/upstream/__init__.py", line 428, in provide
    if self.already_exists_in_store() is None:
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/builddeb/upstream/__init__.py", line 449, in already_exists_in_store
    return gather_orig_files(self.package, self.version, self.store_dir)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/builddeb/upstream/__init__.py", line 372, in gather_orig_files
    if filename.startswith(prefix):
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 5: ordinal not in range(128)

bzr 2.4b5 on python 2.7.2 (Linux-3.0.0-8-generic-x86_64-with-
    Ubuntu-11.10-oneiric)
arguments: ['/usr/bin/bzr', 'bd', '--', '-uc', '-us', '-B']
plugins: bash_completion[2.4b5], builddeb[2.7.0dev], changelog_merge[2.4b5],
    email[unknown], launchpad[2.4b5], netrc_credential_store[2.4b5],
    news_merge[2.4b5], weave_fmt[2.4b5]
encoding: 'ANSI_X3.4-1968', fsenc: 'ANSI_X3.4-1968', lang: None

*** Bazaar has encountered an internal error. This probably indicates a
    bug in Bazaar. You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    including this traceback and a description of the problem.
$

Installing language-pack-en and setting LANG=en_US.UTF-8 is sufficient to clear this error.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: bzr-builddeb 2.7.7
ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
Uname: Linux 3.0.0-8-generic x86_64
Architecture: amd64
Date: Sun Aug 14 12:38:29 2011
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: bzr-builddeb
UpgradeStatus: Upgraded to oneiric on 2011-06-27 (48 days ago)