Initializing colocated branch fails with "set_reference() takes exactly 4 arguments"

[Steve Shantz]

I'm running Bazaar 2.2.0 on Windows XP.

Using Bazaar Explorer I was trying to initialize a new branch.
- The workspace model is Colocated branches
- no options selected
- format is 2.0 default

The following is the traceback generated when it attempts the initialization.

Run command: bzr new --colocated-branches --format 2a Z:/Verification/testautomation/TIME/repository/TimeCapsuleTrial
Unable to load plugin u'rebase'. It requested API version (2, 1, 0) of module <module 'bzrlib' from 'D:\Tools\Bazaar\lib\library.zip\bzrlib\__init__.pyo'> but the minimum exported version is (2, 2, 0), and the maximum is (2, 2, 0)
Created repository with treeless branches at Z:/Verification/testautomation/TIME/repository/TimeCapsuleTrial/.bzr/branches
Created branch at Z:/Verification/testautomation/TIME/repository/TimeCapsuleTrial/.bzr/branches/trunk
Created working tree at Z:/Verification/testautomation/TIME/repository/TimeCapsuleTrial
bzr: ERROR: exceptions.TypeError: set_reference() takes exactly 4 arguments (3 given)

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 911, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1111, in run_bzr
  File "bzrlib\commands.pyo", line 689, in run_argv_aliases
  File "bzrlib\commands.pyo", line 704, in run
  File "bzrlib\cleanup.pyo", line 135, in run_simple
  File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
  File "D:/Tools/Bazaar/plugins\qbzr\lib\commands.py", line 767, in run
  File "D:/Tools/Bazaar/plugins\qbzr\lib\subprocess.py", line 869, in run_subprocess_command
  File "bzrlib\commands.pyo", line 1111, in run_bzr
  File "bzrlib\commands.pyo", line 689, in run_argv_aliases
  File "bzrlib\commands.pyo", line 704, in run
  File "bzrlib\cleanup.pyo", line 135, in run_simple
  File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
  File "D:/Tools/Bazaar/plugins\explorer\lib\commands.py", line 203, in run
  File "D:/Tools/Bazaar/plugins\explorer\lib\workspace_models.py", line 89, in init_workspace
  File "D:/Tools/Bazaar/plugins\explorer\lib\workspace_models.py", line 304, in build
  File "D:/Tools/Bazaar/plugins\explorer\lib\workspace_models.py", line 311, in _switch_checkout
TypeError: set_reference() takes exactly 4 arguments (3 given)

bzr 2.2.0 on python 2.6.4 (Windows-XP-5.1.2600-SP3)
arguments: ['D:\\Tools\\Bazaar\\bzr.exe', 'qsubprocess', '--bencode', 'l3:new20:--colocated-branches8:--format2:2a63:Z:/Verification/testautomation/TIME/repository/TimeCapsuleTriale']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools D:\Tools\Bazaar\plugins\bzrtools [2.2.0]
  colo D:\Tools\Bazaar\plugins\colo [0.1.0]
  explorer D:\Tools\Bazaar\plugins\explorer [1.1b1]
  fastimport D:\Tools\Bazaar\plugins\fastimport [0.9.0dev]
  launchpad D:\Tools\Bazaar\plugins\launchpad [2.2.0]
  loom D:\Tools\Bazaar\plugins\loom [2.2.1dev]
  netrc_credential_store D:\Tools\Bazaar\plugins\netrc_credential_store [2.2.0]
  news_merge D:\Tools\Bazaar\plugins\news_merge [2.2.0]
  pipeline D:\Tools\Bazaar\plugins\pipeline [unknown]
  qbzr D:\Tools\Bazaar\plugins\qbzr [0.19.0]
  rewrite D:\Tools\Bazaar\plugins\rewrite [0.6.0]
  svn D:\Tools\Bazaar\plugins\svn [1.0.3]
  upload D:\Tools\Bazaar\plugins\upload [1.0.0dev]
  xmloutput D:\Tools\Bazaar\plugins\xmloutput [0.8.6]

*** 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.

[Alexander Belchenko (bialix)]

Launchpad Bug Tracker пишет:
> You have been subscribed to a public bug:
>
> I'm running Bazaar 2.2.0 on Windows XP.
>
> Traceback (most recent call last):
...
> File "D:/Tools/Bazaar/plugins\explorer\lib\workspace_models.py", line 311, in _switch_checkout
> TypeError: set_reference() takes exactly 4 arguments (3 given)

It used to work in bzr 2.1.2 and earlier, so I suppose bzr-explorer
needs to be updated to proper support bzr 2.2

As workaround: if you have bzr-colo plugin installed then please use
"All commands" button and select colo-init command here. It should
successfully init colocated workspace for you.

[Alexander Belchenko (bialix)]

Indeed, bzr 2.2 breaks API regarding set_reference. Unfortunately there is no NEWS entry for such change.
Anyway, NEWS does not help the fix this problem, and bzr-explorer should be fixed here.

[Alexander Belchenko (bialix)]

NOTE for myself: http://bazaar.launchpad.net/~nmb/bzr-colo/trunk/revision/90