1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
Bazaar-NG
*********
.. These documents are formatted as ReStructuredText. You can ..
.. convert them to HTML, PDF, etc using the ``python-docutils`` ..
.. package. ..
*Bazaar-NG* (``bzr``) is a project of `Canonical Ltd`__ to develop an
open source distributed version control system that is powerful,
friendly, and scalable. The project is at an early stage of
development.
__ http://canonical.com/
**Note:** These documents are in a very preliminary state, and so may
be internally or externally inconsistent or redundant. Comments are
still very welcome. Please send them to <mbp@sourcefrog.net>.
Summary status
--------------
(as of 2005-02-23)
* Bazaar-NG can track the history of a single local branch, similar to
RCS. The storage format should be reasonably close to what will be
used for 1.0.
* The following commands work: ``add``, ``remove``, ``commit``,
``log``, ``diff`` (whole tree against basis revision), ``status``, ``help``,
``export`` (any revision).
* Subdirectories and files within them are now supported.
User documentation
------------------
* `Project overview/introduction <intro.html>`__
* `Command reference <cmdref.html>`__ -- intended to be user
documentation, and gives the best overview at the moment of what the
system will feel like to use. Fairly complete.
* `Quick reference <quickref.html>`__ -- single page description of
how to use, intended to check it's adequately simple. Incomplete.
* `FAQ <faq.html>`__ -- mostly user-oriented FAQ.
* `Demonstration/tutorial <short-demo.html>`__
Requirements and general design
-------------------------------
* `Various purposes of a VCS <purpose.html>`__ -- taking snapshots and
helping with merges is not the whole story.
* `Requirements <requirements.html>`__
* `Costs <costs.html>`__ of various factors: time, disk, network, etc.
* `Deadly sins <deadly-sins.html>`__ that gcc maintainers suggest we avoid.
* `Overview of the whole design <design.html>`__ and miscellaneous
small design points.
* `File formats <formats.html>`__
* `Random observations <random.html>`__ that don't fit anywhere else yet.
Design of particular features
-----------------------------
* `Automatic generation of ChangeLogs <changelogs.html>`__
* `Cherry picking <cherry-picking.html>`__ -- merge just selected non-contiguous changes from a branch.
* `Common changeset format <common-format.html>`__ for interchange
format between VCS.
* `Compression <compression.html>`__ of file text for more efficient storage.
* `Config specs <config-specs.html>`__ assemble a tree from several places.
* `Conflicts <conflicts.html>`_ that can occur during merge-like operations.
* `Recovering from interrupted operations <interrupted.html>`__
* `Inventory command <inventory.html>`__
* `Branch joins <join-branches.html>`__ represent that all the changes
from one branch are integrated into another.
* `Kill a version <kill-version.html>`__ to fix a broken commit or
wrong message, or to
remove confidential information from the history.
* `Hash collisions <hashes.html>`__ and weaknesses, and the security
implications thereof.
* `Layers <layers.html>`__ within the design
* `Library interface <library-interface.html>`__ for Python.
* `Merge <merge.html>`__
* `Mirroring <mirroring.html>`__
* `Optional edit command <optional-edit.html>`__: sometimes people
want to make the working copy read-only, or not present at all.
* `Partial commits <partial-commit.html>`__
* `Patch pools <pool.html>`__ to efficiently store related branches.
* `Revision syntax <revision-syntax.html>`__ -- ``hello.c@12``, etc.
* `Roll-up commits <rollup.html>`__ -- a single revision incorporates
the changes from several others.
* `Scalability <scalability.html>`__
* `Security <security.html>`__
* `Shared branches <shared-branches.html>`__ maintained by more than
one person
* `Supportability <supportability.html>`__ -- how to handle any bugs
or problems in the field.
* `Place tags on revisions for easy reference <tagging.html>`__
* `Detecting unchanged files <unchanged.html>`__
* `Merging previously-unrelated branches <unrelated-merge.html>`__
* `Usability principles <usability.html>`__ (very small at the moment)
* `<use-cases.html>`__
* `<web-interface.html>`__
* `<workflow.html>`__ Modelling/controlling flow of patches.
* `<yaml.html>`__ -- Discussion of using YAML_ as a storage or transmission format.
.. _YAML: http://www.yaml.org/
Comparisons to other systems
----------------------------
* `Taxonomy <taxonomy.html>`__: basic questions a VCS must answer.
* `Bitkeeper <bitkeeper.html>`__, the proprietary system used by some
kernel developers.
* `Aegis <compared-aegis.html>`__, a tool focussed on enforcing
process and workflow.
* `Codeville <compared-codeville.html>`__ has an intruiging but
scarcely-documented merge algorithm.
* `CVSNT <compared-cvsnt.html>`__, with more Windows support and some
merge enhancements.
* `OpenCM <compared-opencm.html>`__, another hash-based tool with a
good whitepaper.
* `PRCS <compared-prcs.html>`__, a non-distributed inventory-based tool.
* `GNU Arch <todo-from-arch.html>`__, with many pros and cons.
* `Darcs <darcs.html>`__, a merge-focussed tool with good usability.
* `Quilt <quilt.html>`__ -- Andrew Morton's patch scripts, popular with kernel maintainers.
* `Monotone <monotone.html>`__, Graydon Hoare's hash-based distributed system.
* `SVK <svk.html>`__ -- distributed operation stacked on Subversion.
* `Sun Teamware <compared-teamware.html>`__
Project management and organization
-----------------------------------
* `Development news <news.html>`__
* `Notes on how to get a VCS adopted <adoption.html>`__
* `Testing plan <testing.html>`__ -- very sketchy.
* `Thanks <thanks.html>`__ to various people
* `Roadmap <roadmap.html>`__: High-level order for implementing features.
* `<work-order.html>`__: current tasks.
* `Extra commands <extra-commands.html>`__ for
internal/developer/debugger use.
* `Choice of Python as a development language <python.html>`__
Download
--------
There are no releases yet.
The Bazaar-NG development code may be downloaded using GNU Arch by the
following steps::
tla register-archive http://sourcefrog.net/arch/mbp@sourcefrog.net--2004
tla get mbp@sourcefrog.net--2004/bazaar-ng--0 bazaar-ng
(By contrast, when Bazaar-NG network operations are complete, a single
much shorter command will do.)
Note that the current code is under heavy development and so is not
guaranteed to do anything useful whatsoever.
|