Mercurial > hg
annotate mercurial/help/subrepos.txt @ 24793:2ec894582ea2
bundle2: add a 'copy' method on parts
This is the first step in our quest for preserving the server output on error
(issue4594). We want to be able to copy the output parts from the aborted reply
into the exception bundle.
The function will be used in a later patch.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Thu, 16 Apr 2015 03:15:28 -0400 |
parents | a8595176dd64 |
children | 89fe9921511f |
rev | line source |
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12828 | 1 Subrepositories let you nest external repositories or projects into a |
2 parent Mercurial repository, and make commands operate on them as a | |
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3 group. |
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4 |
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5 Mercurial currently supports Mercurial, Git, and Subversion |
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6 subrepositories. |
12828 | 7 |
8 Subrepositories are made of three components: | |
9 | |
10 1. Nested repository checkouts. They can appear anywhere in the | |
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11 parent working directory. |
12828 | 12 |
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13 2. Nested repository references. They are defined in ``.hgsub``, which |
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14 should be placed in the root of working directory, and |
12828 | 15 tell where the subrepository checkouts come from. Mercurial |
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16 subrepositories are referenced like:: |
12828 | 17 |
18 path/to/nested = https://example.com/nested/repo/path | |
19 | |
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20 Git and Subversion subrepos are also supported:: |
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21 |
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22 path/to/nested = [git]git://example.com/nested/repo/path |
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23 path/to/nested = [svn]https://example.com/nested/trunk/path |
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24 |
12828 | 25 where ``path/to/nested`` is the checkout location relatively to the |
26 parent Mercurial root, and ``https://example.com/nested/repo/path`` | |
27 is the source repository path. The source can also reference a | |
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28 filesystem path. |
12828 | 29 |
30 Note that ``.hgsub`` does not exist by default in Mercurial | |
31 repositories, you have to create and add it to the parent | |
32 repository before using subrepositories. | |
33 | |
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34 3. Nested repository states. They are defined in ``.hgsubstate``, which |
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35 is placed in the root of working directory, and |
12828 | 36 capture whatever information is required to restore the |
37 subrepositories to the state they were committed in a parent | |
38 repository changeset. Mercurial automatically record the nested | |
39 repositories states when committing in the parent repository. | |
40 | |
41 .. note:: | |
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42 |
12828 | 43 The ``.hgsubstate`` file should not be edited manually. |
44 | |
45 | |
46 Adding a Subrepository | |
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47 ====================== |
12828 | 48 |
49 If ``.hgsub`` does not exist, create it and add it to the parent | |
50 repository. Clone or checkout the external projects where you want it | |
51 to live in the parent repository. Edit ``.hgsub`` and add the | |
52 subrepository entry as described above. At this point, the | |
53 subrepository is tracked and the next commit will record its state in | |
54 ``.hgsubstate`` and bind it to the committed changeset. | |
55 | |
56 Synchronizing a Subrepository | |
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57 ============================= |
12828 | 58 |
59 Subrepos do not automatically track the latest changeset of their | |
60 sources. Instead, they are updated to the changeset that corresponds | |
61 with the changeset checked out in the top-level changeset. This is so | |
62 developers always get a consistent set of compatible code and | |
63 libraries when they update. | |
64 | |
65 Thus, updating subrepos is a manual process. Simply check out target | |
66 subrepo at the desired revision, test in the top-level repo, then | |
67 commit in the parent repository to record the new combination. | |
68 | |
69 Deleting a Subrepository | |
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70 ======================== |
12828 | 71 |
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72 To remove a subrepository from the parent repository, delete its |
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73 reference from ``.hgsub``, then remove its files. |
12828 | 74 |
75 Interaction with Mercurial Commands | |
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76 =================================== |
12828 | 77 |
78 :add: add does not recurse in subrepos unless -S/--subrepos is | |
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79 specified. However, if you specify the full path of a file in a |
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80 subrepo, it will be added even without -S/--subrepos specified. |
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81 Subversion subrepositories are currently silently |
12828 | 82 ignored. |
83 | |
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84 :addremove: addremove does not recurse into subrepos unless |
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85 -S/--subrepos is specified. However, if you specify the full |
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86 path of a directory in a subrepo, addremove will be performed on |
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87 it even without -S/--subrepos being specified. Git and |
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88 Subversion subrepositories will print a warning and continue. |
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89 |
12828 | 90 :archive: archive does not recurse in subrepositories unless |
91 -S/--subrepos is specified. | |
92 | |
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93 :cat: cat currently only handles exact file matches in subrepos. |
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94 Subversion subrepositories are currently ignored. |
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95 |
12828 | 96 :commit: commit creates a consistent snapshot of the state of the |
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97 entire project and its subrepositories. If any subrepositories |
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98 have been modified, Mercurial will abort. Mercurial can be made |
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99 to instead commit all modified subrepositories by specifying |
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100 -S/--subrepos, or setting "ui.commitsubrepos=True" in a |
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101 configuration file (see :hg:`help config`). After there are no |
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102 longer any modified subrepositories, it records their state and |
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103 finally commits it in the parent repository. The --addremove |
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104 option also honors the -S/--subrepos option. However, Git and |
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105 Subversion subrepositories will print a warning and abort. |
12828 | 106 |
107 :diff: diff does not recurse in subrepos unless -S/--subrepos is | |
108 specified. Changes are displayed as usual, on the subrepositories | |
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109 elements. Git subrepositories do not support --include/--exclude. |
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110 Subversion subrepositories are currently silently ignored. |
12828 | 111 |
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112 :files: files does not recurse into subrepos unless -S/--subrepos is |
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113 specified. Git and Subversion subrepositories are currently |
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114 silently ignored. |
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115 |
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116 :forget: forget currently only handles exact file matches in subrepos. |
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117 Git and Subversion subrepositories are currently silently ignored. |
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118 |
12828 | 119 :incoming: incoming does not recurse in subrepos unless -S/--subrepos |
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120 is specified. Git and Subversion subrepositories are currently |
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121 silently ignored. |
12828 | 122 |
123 :outgoing: outgoing does not recurse in subrepos unless -S/--subrepos | |
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124 is specified. Git and Subversion subrepositories are currently |
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125 silently ignored. |
12828 | 126 |
127 :pull: pull is not recursive since it is not clear what to pull prior | |
128 to running :hg:`update`. Listing and retrieving all | |
129 subrepositories changes referenced by the parent repository pulled | |
130 changesets is expensive at best, impossible in the Subversion | |
131 case. | |
132 | |
133 :push: Mercurial will automatically push all subrepositories first | |
134 when the parent repository is being pushed. This ensures new | |
135 subrepository changes are available when referenced by top-level | |
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136 repositories. Push is a no-op for Subversion subrepositories. |
12828 | 137 |
138 :status: status does not recurse into subrepositories unless | |
139 -S/--subrepos is specified. Subrepository changes are displayed as | |
140 regular Mercurial changes on the subrepository | |
141 elements. Subversion subrepositories are currently silently | |
142 ignored. | |
143 | |
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144 :remove: remove does not recurse into subrepositories unless |
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145 -S/--subrepos is specified. However, if you specify a file or |
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146 directory path in a subrepo, it will be removed even without |
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147 -S/--subrepos. Git and Subversion subrepositories are currently |
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148 silently ignored. |
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149 |
12828 | 150 :update: update restores the subrepos in the state they were |
151 originally committed in target changeset. If the recorded | |
152 changeset is not available in the current subrepository, Mercurial | |
153 will pull it in first before updating. This means that updating | |
154 can require network access when using subrepositories. | |
155 | |
156 Remapping Subrepositories Sources | |
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157 ================================= |
12828 | 158 |
159 A subrepository source location may change during a project life, | |
160 invalidating references stored in the parent repository history. To | |
161 fix this, rewriting rules can be defined in parent repository ``hgrc`` | |
162 file or in Mercurial configuration. See the ``[subpaths]`` section in | |
163 hgrc(5) for more details. | |
164 |