Don't emit a message when the netrc file doesn't exist or couldn't
be opened.
Instead of trying to unpack the result of info.authenticators() and
catching the resulting TypeError when it's None, first store it to
a local and only unpack it if it has a value.
Also remove an unused import.
Change-Id: I5c404d91e48c261c1ab850c3e5f040c4f4c235cb
Use the same cookies and proxy that git traffic goes through for
persistent-http[s] to support authentication for smart-sync.
Change-Id: I20f4a281c259053a5a4fdbc48b1bca48e781c692
Add repo sync support for GITC checkouts. If the user is in the
GITC client directory they can still pull the sources as normal
if they pass in the --force-gitc argument. Otherwise the user
should call repo sync in the GITC view to update the user's
remote view. (This works because .repo in the GITC view will
link to .repo in the client config directory.)
Part of the support for this change is the refactoring of GITC
related code into gitc_utils.py.
Change-Id: I2636aaa50b450b6f091309db8dd0e8f4dbdad579
Adds the new gitc-init command to set up a GITC client. Gitc-init
sets up the client directory and calls repo init within it. Once
the repo is initialized, then generates a GITC manifest file
by using git ls-remote on each project and retrieving the HEAD SHA
to use as the revision attribute.
Gitc-init inherits from and has all the options as repo init.
Change-Id: Icd7e47e90eab752a77de7c80ebc98cfe16bf6de3
Previously repo would only print the failing project path if
Sync_NetworkHalf returned false/empty, but if it threw an
exception the print() was never called.
Change-Id: I58c41de43930df5e34b21561c205e062a72e290f
Enable operating against groups of repositories. As it stands, it isn't
compatible with `-r/--regex`.
`repo forall -g groupname -c pwd` will run `pwd` for all projects in
groupname.
`repo forall -g thisgroup,-butnotthisone -c pwd` will run `pwd` for all
projects in `thisgroup` but not `butnotthisone`.
`repo list -g groupname -n` will list all the names of repos in
`groupname`.
Change-Id: Ia75c50ce52541d1c8cea2874b20a4db2e0e54960
In some cases, a user may wish to continue with a sync even though
it would require overwriting an existing git directory. This behavior
is not safe as a default because it could result in the loss of some
user data, but as an optional flag it allows the user more flexibility.
To support this, add a --force-sync flag to the sync command that will
attempt to overwrite the existing git dir if it is specified and the
existing git dir points to the wrong obj dir.
Change-Id: Ieddda8ad54e264a1eb4a9d54881dd6ebc8a03833
repo info will crash when using a manifest with no default element despite
default being an optional element. Output nothing for "Manifest Branch" if no
default element exists (or if no default revision exists).
Change-Id: I7ebffa2408863837ba980f0ab6e593134400aea9
If a workspace is synced with the -s or -t option, the included projects
may be different to those in the original manifest. However, when using
the forall command, the list of the projects from the original manifest
is used.
If the smart sync manifest file exists, use it to override the original
manifest.
Change-Id: Iaefcbe148d2158ac046f158d98bbd8b5a5378ce7
When syncing with the -s or -t option, a smart_sync_override.xml file
is created. This file is left in the file system when syncing again
without the -s or -t option.
Remove the smart sync override manifest, if it exists, when not using
the -s or -t option.
Change-Id: I697a0f6405205ba5f84a4d470becf7cd23c07b4b
git rev-parse fails for projects that don't have an explicit revision
specified, and don't have a branch of the same name as the default
revision. This can be the case in a workspace synced with the smart
sync (-s) or smart tag (-t) option.
Change-Id: I19bfe9fe7396170379415d85f10f6440dc6ea08f
The error message only states that writing the manifest failed.
Include the exception message, so it's easier to track down the reason
that the write failed.
Change-Id: I06e942c48a19521ba45292199519dd0a8bdb1de7
After performing the actual cherry-pick operation, the code
in cherry_pick.py opens a pipe to 'git commit -F' to rewrite the commit
message, emits the fixed-up commit msg to the pipe, then waits
for 'git commit' to complete. The child 'git' process winds up
hanging while reading from the pipe, however, since the parent
process still has it open. To fix the hang, change the parent process
to close its end of the pipe after it has emitted the message.
Change-Id: I5929371e69a5b076f09009d00d40a2c72ac8ac33
If the generator that produces per-project worker arguments raises an
exception it triggers python bug http://bugs.python.org/issue8296.
Rewrite the generator expression as a generator function, and catch
Exceptions and KeyboardInterrupts to end the iteration.
Also add a pool worker initializer to disable SIGINT to prevent
KeyboardInterrupts inside multiprocessing.Pool in the worker threads
causing the same problem.
Fixes easy-to-reproduce hangs when hitting ctrl-c during
repo forall -c echo
Change-Id: Ie4a65b3e1e07a64ed6bb6ff20f3912c4326718ca
In 2fb6466f79 an optimisation was
added to avoid fetching from remotes if the project is fixed to
a revision and the revision is already available locally.
This causes problems for users who expect all objects to be
fetched by default.
Change the logic so that the optimized behaviour is only enabled if
an option is explicitly given to repo sync.
Change-Id: I3b2794ddd8e0071b1787e166463cd8347ca9e24f
Before, a list was generated, which is why there was a massive delay.
Using a generator will allow processes to start straight away
Change-Id: Ia325b0b340cc328c08c9bcc92a6709bbdaf6a664
buflist was being used, which isn't available in Python 3.
`Execute` was using StringIO to capture the output of `PrintWorkTreeStatus`,
only to redirect it straight to stdout.
Instead, just let `PrintWorkTreeStatus` do it's own thing directly to stdout.
for handling `_FindOrphans`, we swap StringIO for a list. Nothing was done
that needed a a file like object.
Change-Id: Ibdaae137904de66a5ffb590d84203ef0fe782d8b
This reverts commit 38e4387f8e.
A "repo init" followed by "repo sync" is meant to be as safe as
"git clone". In particular it should not run arbitrary code provided
by the manifest owner.
It would still be nice to have support for manifest-defined git hooks
--- they'd just need a prompt like the upload RepoHook has. Hopefully
a later change can bring them back.
Change-Id: I5ecd90fb5c2ed64f103d856d1ffcba38a47b062d
Signed-off-by: Jonathan Nieder <jrn@google.com>
When working within a team or corporation it is often
useful/required to use predefined git templates. This
change teaches repo to use a per-remote git hook template
structure.
The implementation is done as a continuation of the
existing projecthook functionality. The terminology is
therefore defined as projecthooks.
The downloaded projecthooks are stored in the .repo
directory as a metaproject separating them from the users
project forest.
The projecthooks are downloaded and set up when doing a
repo init and updated for each new repo init.
When downloading a mirror the projecthooks gits are
not added to the bare forest since the intention is to
ensure that the latest are used (allows for company policy
enforcement).
The projecthooks are defined in the manifest file in the
remote element as a subnode, the name refers to the
project name on the server referred to in the remote.
<remote name="myremote ..>
<projecthook name="myprojecthookgit" revision="myrevision"/>
</remote>
The hooks found in the projecthook revision supersede
the stock hooks found in repo. This removes the need for
updating the projecthook gits for repo stock hook changes.
Change-Id: I6796b7b0342c1f83c35f4b3e46782581b069a561
Signed-off-by: Patrik Ryd <patrik.ryd@stericsson.com>
Signed-off-by: Ian Kumlien <ian.kumlien@gmail.com>
When there are uncommitted files in the tree, 'repo upload' stops to
ask if it is OK to continue, but does not report the actual names of
uncommitted files.
This patch adds plumbing to have the outstanding file names reported
if desired.
BUG=None
TEST=verified that 'repo upload' properly operates with the following
conditions present in the tree:
. file(s) modified locally
. file(s) added to index, but not committed
. files not known to git
. no modified files (the upload proceeds as expected)
Change-Id: If65d5f8e8bcb3300c16d85dc5d7017758545f80d
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Vadim Bendebury <vbendeb@google.com>
When current is "split" (i.e. some projects are current while others are not):
- Disable 'not in' printout (i.e. will print out all projects)
- Disable printing of multiple projects on one line
- Print current projects in green, non-current in white
Since using color to differentiate current from non-current in "split" cases:
- In non-split cases also print out project names in color (green for current
white for non-current)
Change-Id: Ia6b826612c708447cecfe5954dc767f7b2ea2ea7
Enable '--jobs' ('-j') option in the forall subcommand. For -jn
where n > 1, the '-p' option can no longer guarantee the
continuity of console output between the project header and the
output from the worker process.
SIG_INT is sent to all worker processes upon keyboard interrupt
(Ctrl+C).
Bug: Issue 105
Change-Id: If09afa2ed639d481ede64f28b641dc80d0b89a5c
Use JSON as it is shown to be much faster than pickle.
Also clean up the loading and saving functions.
Change-Id: I45b3dee7b4d59a1c0e0d38d4a83b543ac5839390
iterator.next() was replaced with iterator.__next__() in Python 3.
Use next(iterator) instead which will select the correct method for
returning the next item.
Change-Id: I6d0c89c8b32e817e5897fe87332933dacf22027b
For long-running forall commands sometimes it's useful to know which
iteration is currently running. Add REPO_I and REPO_COUNT environment
variables to reflect the current iteration count as well as the total
number of iterations so that the user can build simple status
indicators.
Example:
$ repo forall -c 'echo $REPO_I / $REPO_COUNT; git gc'
1 / 579
Counting objects: 41, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (19/19), done.
Writing objects: 100% (41/41), done.
Total 41 (delta 21), reused 41 (delta 21)
2 / 579
Counting objects: 53410, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (10423/10423), done.
Writing objects: 100% (53410/53410), done.
Total 53410 (delta 42513), reused 53410 (delta 42513)
3 / 579
...
Change-Id: I9f28b0d8b7debe423eed3b4bc1198b23e40c0c50
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
The `review.URL.autocopy` setting sends email notification to the
named reviewers, but does not add them as reviewer on the uploaded
change.
Add a new setting `review.URL.autoreviewer`. The named reviewers
will be added as reviewer on the uploaded change.
Change-Id: I3fddfb49edf346f8724fe15b84be8c39d43e7e65
Signed-off-by: bijia <bijia@xiaomi.com>
This command allows a deeper diff between two manifest projects.
In addition to changed projects, it displays the logs of the
commits between both revisions for each project.
Change-Id: I86d30602cfbc654f8c84db2be5d8a30cb90f1398
Signed-off-by: Julien Campergue <julien.campergue@parrot.com>
The fetch logic is now shared between the jobs == 1 and
jobs > 1 cases. This refactoring also fixes a bug where
opts.force_broken was not honored when jobs > 1.
Change-Id: Ic886f3c3c00f3d8fc73a65366328fed3c44dc3be
Currently if you run repo download -c on a change and the cherry-pick
runs into a merge conflict a Traceback is produced:
rob@rob-i5-lm ~/Programming/repo_test/repo1 $ repo download -c repo1 3/1
From ssh://rob-i5-lm:29418/repo1
* branch refs/changes/03/3/1 -> FETCH_HEAD
error: could not apply 0c8b474... 2
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit'
Traceback (most recent call last):
File "/home/rob/Programming/git-repo/main.py", line 408, in <module>
_Main(sys.argv[1:])
File "/home/rob/Programming/git-repo/main.py", line 384, in _Main
result = repo._Run(argv) or 0
File "/home/rob/Programming/git-repo/main.py", line 143, in _Run
result = cmd.Execute(copts, cargs)
File "/home/rob/Programming/git-repo/subcmds/download.py", line 90, in Execute
project._CherryPick(dl.commit)
File "/home/rob/Programming/git-repo/project.py", line 1943, in _CherryPick
raise GitError('%s cherry-pick %s ' % (self.name, rev))
error.GitError: repo1 cherry-pick 0c8b4740f876f8f8372bbaed430f02b6ba8b1898
This amount of error message is confusing to users and has the side effect
of the git message telling you the actual issue being ignored.
This change introduces a message stating that the cherry-pick couldn't
be completed removing the Traceback.
To reproduce the issue create a change that causes a conflict with one currently
in review and use repo download -c to cherry-pick the conflicting change.
Change-Id: I8ddf4e0c8ad9bd04b1af5360313f67cc053f7d6a
This takes the wrapper importing code from main.py and moves it into
its own module so that other modules may import it without causing
circular imports with main.py.
Change-Id: I9402950573933ed6f14ce0bfb600f74f32727705
the value of Manifest.projects has changed from being the dictionary
to the values of the dictionary. Here we handle this change
correctly on a PostRepoUpgrade.
From a `git diff v1.12.7 -- manifest_xml.py`:
+ @property
def projects(self):
self._Load()
- return self._projects
+ return self._paths.values()
self._paths does contain the projects according to this line of
manifest_xml.py:
484 self._paths[project.relpath] = project
Change-Id: I141f8d5468ee10dfb08f99ba434004a307fed810
The backtrace currently occurs when one uses the "--cbr" argument with
the repo upload subcommand if the current branch is not tracking an
upstream branch. There may be other cases that would backtrace as well,
but this is the only one I found so far.
Change-Id: Ie712fbb0ce3e7fe3b72769fca89cc4c0e3d2fce0
This significantly reduces sync time and used brandwidth as only
a tar of each project's revision is checked out, but git is not
accessible from projects anymore.
This is relevant when git is not needed in projects but sync
speed/brandwidth may be important like on CI servers when building
several versions from scratch regularly for example.
Archive is not supported over http/https.
Change-Id: I48c3c7de2cd5a1faec33e295fcdafbc7807d0e4d
Signed-off-by: Julien Campergue <julien.campergue@parrot.com>
* Add .decode('utf-8') where needed
* Add 'b' to `open` where needed, and remove where unnecessary
Change-Id: I0f03ecf9ed1a78e3b2f15f9469deb9aaab698657
git-repo uses 2 space indentation. A couple of recent changes
introduced 4 space indentation in some modules.
Change-Id: Ia4250157c1824c1b5e7d555068c4608f995be9da
It is often useful to be able to include the same project more than
once, but with different branches and placed in different paths in the
workspace. Add this feature.
This CL adds the concept of an object directory. The object directory
stores objects that can be shared amongst several working trees. For
newly synced repositories, we set up the git repo now to share its
objects with an object repo.
Each worktree for a given repo shares objects, but has an independent
set of references and branches. This ensures that repo only has to
update the objects once; however the references for each worktree are
updated separately. Storing the references separately is needed to
ensure that commits to a branch on one worktree will not change the
HEAD commits of the others.
One nice side effect of sharing objects between different worktrees is
that you can easily cherry-pick changes between the two worktrees
without needing to fetch them.
Bug: Issue 141
Change-Id: I5e2f4e1a7abb56f9d3f310fa6fd0c17019330ecd
Example:
- `repo init -b master` / sync a project
- In one project: `git checkout -b work origin/branch-thats-not-master`
- make some changes, `git commit`
- `repo upload .`
- Upload will now be skipped with a warning instead of being uploaded to
master
Change-Id: I990b36217b75fe3c8b4d776e7fefa1c7d9ab7282
Passing a project revisionExpr to UploadForReview will cause it to
try to push to refs/for/<sha> if the revision points to a sha
instead of a branch. Pass None for dest_branch if no destination
branch has been specified, which will cause UploadForReview to
upload to the merge branch.
There is room for further improvement, the user prompts will
still print "Upload project <project> to remote branch <sha>",
and then upload to the merge branch and not the sha, but that
is the same behavior that was in 1.12.2.
Change-Id: I06c510336ae67ff7e68b5b69e929693179d15c0b
When the RPC call fails, the error message returned by the server
is printed, but it is not obvious that this is caused by RPC call
failure.
Prefix the error message with a descriptive message that explains
what went wrong.
Change-Id: I4b77af22aacc2e9843c4df9d06bf54e41d9692ff
When syncing using smart sync or smart tag mode, print the url of
the manifest server that is being used.
This is useful in organisations that have multiple manifest servers
used in different manifest branches.
Change-Id: Ib5bc2de5af6f4a942d0ef735c65cbc0721059a61
The command `repo upload --cbr -D <some branch>` will display
the default revision, and not the actual destination branch.
Fix that and display the branch to which the change will be
uploaded to.
Change-Id: I712ed0871c819dce6774c47254dac4efec4532e0
* manifest_name was never set if opt.smart_sync or opt.smart_tag is used.
* Set it earlier, so that the code handles it correctly when it is None.
* An UnboundLocalError is raised if running `repo sync` without any options:
local variable 'manifest_name' referenced before assignment
* This fixes the above regression caused by commit
53a6c5d93a
Change-Id: I57086670f3589beea8461ce0344f6ec47ab85b7b
Revert "Fix "'module' object is not callable" error", and fix it properly.
* The urlparse module is renamed to urllib.parse in Python 3.
* This commit fixes the code to use "urllib.parse.urlparse"
instead of creating a new module urlib and setting
urlib.parse to urlparse.urlparse.
* Fixes an AttributeError:
'function' object has no attribute 'uses_relative'
This reverts commit cd51f17c64.
Change-Id: I48490b20ecd19cf5a6edd835506ea5a467d556ac
In a couple of files the urlparse method was not being set up
correctly for python < 3 and this resulted in an error being
thrown when trying to call it.
Change-Id: I4d2040ac77101e4e228ee225862f365ae3d96cec
This was broken in b2bd91c, which updated the manifest after it had
been overridden, which made it fall back to the original file (and
not the one from the manifest server).
This builds on 0766900 and overrides the manifest by the one
downloaded from the manifest server completely.
Change-Id: Ic3972390a68919b614616631d99c9e7a63c0e0db
It doesn't make sense to print the relpath, since there's nothing
checked out there and the dir shouldn't even exist.
Change-Id: Id43631a8e0895929d3a5ad4ca8c2dc9e3d233e70
This fixes dest-branch display with >1 branch being uploaded to at
once, and correctly handles setting the target branch in that case.
Change-Id: If5e9c7ece02cc0d903e2cb377485ebea73a07107
This adds the ability to have reviews pushed to a different branch
from the one on which changes are based. This is useful for "gateway"
systems without smartsync.
Change-Id: I3a8a0fabcaf6055e62d3fb55f89c944e2f81569f
Add a new module with methods for checking the Python version.
Instead of handling Python3 imports with try...except blocks, first
check the python version and then import the relevant modules. This
makes the code a bit cleaner and will result in less diff when/if we
remove support for Python < 3 later.
Use the same mechanism to handle `input` vs. `raw_input` and add
suppression of pylint warnings caused by redefinition of the built-in
method `input`.
Change-Id: Ia403e525b88d77640a741ac50382146e7d635924
Also-by: Chirayu Desai <cdesai@cyanogenmod.org>
Signed-off-by: Chirayu Desai <cdesai@cyanogenmod.org>
When running 'repo init --reference=<mirror>', the mirror will be
used for all projects except the manifest project. This is because
the _InitGitDir function uses the 'repo.reference' git config
value specified in the manifest git, which has no effect when
creating the manifest git as that value will be set after the git
has been successfully cloned.
Information about where the manifest git is located on the server
is only known when performing the 'repo init', so that information
has to be provided when cloning the git in order for it to set up
a proper mapping.
Change-Id: I47a2c8b3267a4065965058718ce1def4ecb34d5a
Signed-off-by: Chirayu Desai <cdesai@cyanogenmod.org>
Filter the project list based on regex or wildcard matching
of strings, then we can handle subset of all projects.
Change-Id: Ib6c23aec79e7d981f7b6a5eb0ae93c44effec467
Signed-off-by: Zhiguang Li <muzili@gmail.com>
* Fix imports.
* Use python3 syntax.
* Wrap map() calls with list().
* Use list() only wherever needed.
(Thanks Conley!)
* Fix dictionary iteration methods
(s/iteritems/items/).
* Make use of sorted() in appropriate places
* Use iterators directly in the loop.
* Don't use .keys() wherever it isn't needed.
* Use sys.maxsize instead of sys.maxint
TODO:
* Make repo work fully with python3. :)
Some of this was done by the '2to3' tool [1], by
applying the needed fixes in a way that doesn't
break compatibility with python2.
Links:
[1]: http://docs.python.org/2/library/2to3.html
Change-Id: Ibdf3bf9a530d716db905733cb9bfef83a48820f7
Signed-off-by: Chirayu Desai <cdesai@cyanogenmod.org>
* Print project name if the "quiet" option is not used.
Change-Id: I99863bb50f66e4dcbaf2d170bdd05971f2a4e19a
Signed-off-by: Chirayu Desai <cdesai@cyanogenmod.org>
`repo list -n` prints only the name of the projects.
`repo list -p` prints only the path of the projects.
Change-Id: If7d78eb2651f0b1b2fe555dc286bd2bdcad0d56d
Signed-off-by: Chirayu Desai <cdesai@cyanogenmod.org>
Change Details:
* Make "default" a special manifest group that matches any project that
does not have the special project group "notdefault"
* Use "default" instead of "all,-notdefault" when user does not specify
manifest group
* Expand -g option help to include example usage of manifest groups
Change Benefits:
* Allow a more intuitive and expressive manifest groups specification:
* "default" instead of "all,-notdefault"
* "default,foo" instead of "all,-notdefault,foo"
* "default,-foo" instead of "all,-notdefault,-foo"
* "foo,-default" which has no equivalent
* Default manifest groups behavior can be restored by the command
'repo init -g default'. This is significantly more intuitive than the
current equivalent command 'repo init -g all,-notdefault'.
Change-Id: I6d0673791d64a650110a917c248bcebb23b279d3
List the user's manifest groups when running `repo info`.
These groups are passed to `repo init` using the -g/--groups flag.
Change-Id: Ie8a4ed74a35b8b90df3b1ee198fe725b1cd68ae7
Several messages are printed with the `print` method and the message
is split across two lines, i.e.:
print('This is a message split'
'across two source code lines')
Which causes the message to be printed as:
This is a message splitacross two source code lines
Add a space at the end of the first line before the line break:
print('This is a message split '
'across two source code lines'
Also correct a minor spelling mistake.
Change-Id: Ib98d93fcfb98d78f48025fcc428b6661380cff79
Add an option to pass `--no-tags' to `git fetch'.
Change-Id: I4158cc369773e08e55a167091c38ca304a197587
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
`repo cherry-pick` was broken because we were referencing stderr
instead of sys.stderr. This should fix it.
Change-Id: I67f25c3a0790d029edc65732c319df7c684546c8
If a workspace is initialised with:
repo init -u git://path/to/manifest -b manifest-branch
and the default.xml specifies the default revision as `other-branch`,
running `repo info -d` results in a GitError:
fatal: bad revision 'refs/remotes/m/other-branch..'
The repo info command uses the default revision to build the symlink
to the remote revision which is passed to the `git rev-list` command.
This is incorrect; the manifest's branch name should be used.
Change-Id: Ibae5b91869848276785facfaef433e38d49fd726
'repo status --orphans' searches for non-repo objects
(not within a project), which is particularly helpful
before removing a working tree.
Change-Id: I2239c12e6bc0447b0ad71129551cb50fa671961c
In the information message displayed after running repo init, there
is a missing space:
If this is not the directory in which you want to initializerepo
Add a space.
Change-Id: I20467673ba7481cfe782ba58ff6ed2f7ce9824a5
If repo init is run with the --mirror option, repo checks if there
is already a workspace initialized in the current location, and if
so, exits with an error message:
--mirror not supported on existing client
This error can cause confusion; the users do not understand what
is wrong and what they need to do to fix it.
Change the error message to make it a bit clearer.
Change-Id: Ifd06ef64fd264bd1117e4184c49afe0345b75d8c
If the current manifest is broken then "repo sync" fails because it
can't retrieve the default value for --jobs. Use 1 in this case, in
order that you can "repo sync" to get a fixed manifest (assuming someone
fixed it upstream).
Change-Id: I4262abb59311f1e851ca2a663438a7e9f796b9f6
(Previous submission of this change broke Android buildbot due to
incorrect regular expression for parsing git-config output. During
investigation, we also found that Android, which pulls Chromium, has a
workaround for Chromium's submodules; its manifest includes Chromium's
submodules. This new change, in addition to fixing the regex, also
take this type of workarounds into consideration; it adds a new
attribute that makes repo not fetch submodules unless submodules have a
project element defined in the manifest, or this attribute is
overridden by a parent project element or by the default element.)
We need a representation of git-submodule in repo; otherwise repo will
not sync submodules, and leave workspace in a broken state. Of course
this will not be a problem if all projects are owned by the owner of the
manifest file, who may simply choose not to use git-submodule in all
projects. However, this is not possible in practice because manifest
file owner is unlikely to own all upstream projects.
As git submodules are simply git repositories, it is natural to treat
them as plain repo projects that live inside a repo project. That is,
we could use recursively declared projects to denote the is-submodule
relation of git repositories.
The behavior of repo remains the same to projects that do not have a
sub-project within. As for parent projects, repo fetches them and their
sub-projects as normal projects, and then checks out subprojects at the
commit specified in parent's commit object. The sub-project is fetched
at a path relative to parent project's working directory; so the path
specified in manifest file should match that of .gitmodules file.
If a submodule is not registered in repo manifest, repo will derive its
properties from itself and its parent project, which might not always be
correct. In such cases, the subproject is called a derived subproject.
To a user, a sub-project is merely a git-submodule; so all tips of
working with a git-submodule apply here, too. For example, you should
not run `repo sync` in a parent repository if its submodule is dirty.
Change-Id: I4b8344c1b9ccad2f58ad304573133e5d52e1faef
