fast-import get internal error on lookup error: unkown encoding: cp65001

[David Sperry]

(Update):"Fixed" it (badly, but made it complete the task at hand) by copying the utf_8.pyo file in lib/library.zip and renaming it cp65001.pyo
Problem appears to be related to pythons lack of aliasing cp65001 to utf_8.
-----------------------------

Attempting conversion of a CVS repository. Successfully created a dumpfile.fi.
Ran >bzr fast-import dumpfile.fi new_bzr.bzr
received error message bzr: ERROR: exceptions.LookupError: unknown encoding: cp65001
and ultimately crashed.

Below is the trace of the second attempt using a smaller subset of the CVS repository hence the
14:44:14 Found 4556 commits already loaded - skipping over these ...
but the the first attempt had the same result.

Following trace resulted:

C:\Users\cvsuser\temp\cvs2svn-tmp>bzr fast-import dumpfile.fi new_bzr.bzr
bzr: warning: unknown terminal encoding cp65001.
  Using encoding cp1252 instead.
bzr: warning: unknown terminal encoding cp65001.
  Using encoding cp1252 instead.
14:44:13 Starting import of 2758 commits ...
14:44:14 Found 4556 commits already loaded - skipping over these ...
14:44:50 Updating branch information ...
bzr: ERROR: exceptions.LookupError: unknown encoding: cp65001

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 920, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1131, in run_bzr
  File "bzrlib\commands.pyo", line 673, in run_argv_aliases
  File "bzrlib\commands.pyo", line 695, in run
  File "bzrlib\cleanup.pyo", line 136, in run_simple
  File "bzrlib\cleanup.pyo", line 166, in _do_with_cleanups
  File "C:/Bazaar/plugins\fastimport\cmds.py", line 312, in run
  File "C:/Bazaar/plugins\fastimport\cmds.py", line 42, in _run
  File "C:/Bazaar/plugins\fastimport\processors\generic_processor.py", line 310,
 in process
  File "fastimport\processor.pyo", line 79, in _process
  File "C:/Bazaar/plugins\fastimport\processors\generic_processor.py", line 351,
 in post_process
  File "C:/Bazaar/plugins\fastimport\branch_updater.py", line 59, in update
  File "C:/Bazaar/plugins\fastimport\branch_updater.py", line 117, in _get_match
ing_branches
  File "C:/Bazaar/plugins\fastimport\branch_updater.py", line 145, in make_branc
h
  File "bzrlib\controldir.pyo", line 646, in create_branch_convenience
  File "bzrlib\bzrdir.pyo", line 910, in create_workingtree
  File "bzrlib\workingtree_4.pyo", line 1549, in initialize
  File "bzrlib\transform.pyo", line 2536, in build_tree
  File "bzrlib\transform.pyo", line 2568, in _build_tree
  File "bzrlib\progress.pyo", line 248, in next_phase
  File "bzrlib\progress.pyo", line 122, in update
  File "bzrlib\ui\text.pyo", line 374, in _progress_updated
  File "bzrlib\ui\text.pyo", line 561, in show_progress
  File "bzrlib\ui\text.pyo", line 543, in _repaint
  File "bzrlib\ui\text.pyo", line 441, in _show_line
LookupError: unknown encoding: cp65001

bzr 2.5.1 on python 2.6.6 (Windows-7-6.1.7601-SP1)
arguments: ['bzr', 'fast-import', 'dumpfile.fi', 'vega_bzr.bzr']
plugins: bzrtools[2.5.0], changelog_merge[2.5.1], colo[0.4.0],
    cvsps_import[unknown], explorer[1.3.0], fastimport[0.14.0dev], git[0.6.8],
    launchpad[2.5.1], loom[2.3.0dev], netrc_credential_store[2.5.1],
    news_merge[2.5.1], pipeline[1.4.0], qbzr[0.22.3], rewrite[0.6.4dev],
    svn[1.2.2], upload[1.2.0dev], xmloutput[0.8.8]
encoding: 'cp1252', fsenc: 'mbcs', 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.