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bundlespec.txt	2.64 KB	-rw-r--r--
color.txt	4.5 KB	-rw-r--r--
common.txt	240 B	-rw-r--r--
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deprecated.txt	678 B	-rw-r--r--
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environment.txt	4.28 KB	-rw-r--r--
evolution.txt	2.1 KB	-rw-r--r--
extensions.txt	1.22 KB	-rw-r--r--
filesets.txt	2.07 KB	-rw-r--r--
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revisions.txt	6.82 KB	-rw-r--r--
rust.txt	3.05 KB	-rw-r--r--
scripting.txt	7.99 KB	-rw-r--r--
subrepos.txt	7.21 KB	-rw-r--r--
templates.txt	5.83 KB	-rw-r--r--
urls.txt	2.47 KB	-rw-r--r--

Code Editor : subrepos.txt

Subrepositories let you nest external repositories or projects into a
parent Mercurial repository, and make commands operate on them as a
group.

Mercurial currently supports Mercurial, Git, and Subversion
subrepositories.

Subrepositories are made of three components:

1. Nested repository checkouts. They can appear anywhere in the
   parent working directory.

2. Nested repository references. They are defined in ``.hgsub``, which
   should be placed in the root of working directory, and
   tell where the subrepository checkouts come from. Mercurial
   subrepositories are referenced like::

path/to/nested = https://example.com/nested/repo/path

Git and Subversion subrepos are also supported::

path/to/nested = [git]git://example.com/nested/repo/path
     path/to/nested = [svn]https://example.com/nested/trunk/path

where ``path/to/nested`` is the checkout location relatively to the
   parent Mercurial root, and ``https://example.com/nested/repo/path``
   is the source repository path. The source can also reference a
   filesystem path.

Note that ``.hgsub`` does not exist by default in Mercurial
   repositories, you have to create and add it to the parent
   repository before using subrepositories.

3. Nested repository states. They are defined in ``.hgsubstate``, which
   is placed in the root of working directory, and
   capture whatever information is required to restore the
   subrepositories to the state they were committed in a parent
   repository changeset. Mercurial automatically record the nested
   repositories states when committing in the parent repository.

.. note::

The ``.hgsubstate`` file should not be edited manually.

Adding a Subrepository
======================

If ``.hgsub`` does not exist, create it and add it to the parent
repository. Clone or checkout the external projects where you want it
to live in the parent repository. Edit ``.hgsub`` and add the
subrepository entry as described above. At this point, the
subrepository is tracked and the next commit will record its state in
``.hgsubstate`` and bind it to the committed changeset.

Synchronizing a Subrepository
=============================

Subrepos do not automatically track the latest changeset of their
sources. Instead, they are updated to the changeset that corresponds
with the changeset checked out in the top-level changeset. This is so
developers always get a consistent set of compatible code and
libraries when they update.

Thus, updating subrepos is a manual process. Simply check out target
subrepo at the desired revision, test in the top-level repo, then
commit in the parent repository to record the new combination.

Deleting a Subrepository
========================

To remove a subrepository from the parent repository, delete its
reference from ``.hgsub``, then remove its files.

Interaction with Mercurial Commands
===================================

:add: add does not recurse in subrepos unless -S/--subrepos is
    specified.  However, if you specify the full path of a file in a
    subrepo, it will be added even without -S/--subrepos specified.
    Subversion subrepositories are currently silently
    ignored.

:addremove: addremove does not recurse into subrepos unless
    -S/--subrepos is specified.  However, if you specify the full
    path of a directory in a subrepo, addremove will be performed on
    it even without -S/--subrepos being specified.  Git and
    Subversion subrepositories will print a warning and continue.

:archive: archive does not recurse in subrepositories unless
    -S/--subrepos is specified.

:cat: Git subrepositories only support exact file matches.
    Subversion subrepositories are currently ignored.

:commit: commit creates a consistent snapshot of the state of the
    entire project and its subrepositories. If any subrepositories
    have been modified, Mercurial will abort.  Mercurial can be made
    to instead commit all modified subrepositories by specifying
    -S/--subrepos, or setting "ui.commitsubrepos=True" in a
    configuration file (see :hg:`help config`).  After there are no
    longer any modified subrepositories, it records their state and
    finally commits it in the parent repository.  The --addremove
    option also honors the -S/--subrepos option.  However, Git and
    Subversion subrepositories will print a warning and abort.

:diff: diff does not recurse in subrepos unless -S/--subrepos is
    specified.  However, if you specify the full path of a file or
    directory in a subrepo, it will be diffed even without
    -S/--subrepos being specified.  Subversion subrepositories are
    currently silently ignored.

:files: files does not recurse into subrepos unless -S/--subrepos is
    specified.  However, if you specify the full path of a file or
    directory in a subrepo, it will be displayed even without
    -S/--subrepos being specified.  Git and Subversion subrepositories
    are currently silently ignored.

:forget: forget currently only handles exact file matches in subrepos.
    Git and Subversion subrepositories are currently silently ignored.

:incoming: incoming does not recurse in subrepos unless -S/--subrepos
    is specified. Git and Subversion subrepositories are currently
    silently ignored.

:outgoing: outgoing does not recurse in subrepos unless -S/--subrepos
    is specified. Git and Subversion subrepositories are currently
    silently ignored.

:pull: pull is not recursive since it is not clear what to pull prior
    to running :hg:`update`. Listing and retrieving all
    subrepositories changes referenced by the parent repository pulled
    changesets is expensive at best, impossible in the Subversion
    case.

:push: Mercurial will automatically push all subrepositories first
    when the parent repository is being pushed. This ensures new
    subrepository changes are available when referenced by top-level
    repositories.  Push is a no-op for Subversion subrepositories.

:serve: serve does not recurse into subrepositories unless
    -S/--subrepos is specified.  Git and Subversion subrepositories
    are currently silently ignored.

:status: status does not recurse into subrepositories unless
    -S/--subrepos is specified. Subrepository changes are displayed as
    regular Mercurial changes on the subrepository
    elements. Subversion subrepositories are currently silently
    ignored.

:remove: remove does not recurse into subrepositories unless
    -S/--subrepos is specified.  However, if you specify a file or
    directory path in a subrepo, it will be removed even without
    -S/--subrepos.  Git and Subversion subrepositories are currently
    silently ignored.

:update: update restores the subrepos in the state they were
    originally committed in target changeset. If the recorded
    changeset is not available in the current subrepository, Mercurial
    will pull it in first before updating.  This means that updating
    can require network access when using subrepositories.

Remapping Subrepositories Sources
=================================

A subrepository source location may change during a project life,
invalidating references stored in the parent repository history. To
fix this, rewriting rules can be defined in parent repository ``hgrc``
file or in Mercurial configuration. See the ``[subpaths]`` section in
hgrc(5) for more details.

${this.title}

Code Editor : subrepos.txt