* Re: git submodule init initialises submodules for which active=false has been defined
2020-03-18 12:50 git submodule init initialises submodules for which active=false has been defined Timur Delahaye
@ 2020-10-06 0:25 ` Philippe Blain
0 siblings, 0 replies; 2+ messages in thread
From: Philippe Blain @ 2020-10-06 0:25 UTC (permalink / raw)
To: Timur Delahaye; +Cc: Git mailing list
Hi Timur,
> Le 18 mars 2020 à 08:50, Timur Delahaye <timur.delahaye@corpowerocean.com> a écrit :
>
> Hello,
>
> I am trying to prevent
> git clone --recurse-submodules
> from installing some of the submodules of the repo that are not necessary to most users.
OK.
> Here is what I did:
> In my main-project
>
> git submodule add --name one url1
> git submodule add --name two url2
>
> Then I edited .gitmodules as follows
>
> [submodule "one"]
> active = false
> url = url1
> [submodule "two"]
> active = true
> url = url2
Note: this could've been done with
git config -f .gitmodules submodule.one.active false
git config -f .gitmodules submodule.two.active true
> commited and pushed.
>
> From a fresh folder when I run
> git clone --recurse-submodules main-repo-url
> both "one" and "two" get installed
Yes. That's working as it should. If you take a look at the `git clone` documentation [1],
you'll see that using '--recurse-submodules' without a pathspec will
clone and initialize all submodules, and write '.' as the value of 'submodule.active'
(meaning, all submodules in the superproject are interesting).
If you do
git clone --recurse-submodules=two main-repo-url
then only "two" is cloned and initialized, but I think you're looking for something
more automatic than that.
> Likewise if I do
> git clone main-repo-url
> git submodule init
> both "one" and "two" are installed and appear in .git/config as well as .git/modules/
I would say that this is also working as it should. If you read
the documentation for `git submodule init` [2],
you'll see that
"If no path is specified and submodule.active has been configured,
submodules configured to be active will be initialized,
otherwise all submodules are initialized."
Note: nothing appears in .git/modules after `git submodule init`,
but only after `git submodule update`, which is the logical next step
(or, you could do it in one step with `git submodule update --init)
I after your clone you instead do
git submodule update --init two
then you'll get what you want (but again, I think you're looking for an automatic
way to do it that does not require spelling out "two" at or after the 'clone' step.)
Notice that if after your clone you do
git config submodule.active two
git submodule update --init
Then you get the same result (this is essentially what
`git clone --recurse-submodules=two ...` does).
> From reading https://git-scm.com/docs/gitsubmodules/2.25.0 my understanding was that both procedures should have installed only "two" and that I should have needed to do
> git submodule init one
> in order to force the local installation of the inactive module "one".
>
> Either I misunderstood the manual or there is a bug with
> git submodule init
I'd be interested to know which section of gitsubmodules(7) made you think that the 'active'
setting would work in the way you're describing here, so it could be improved.
(I have a feeling it's the sentence "Git only recurses into active submodules
(see "ACTIVE SUBMODULES" section below).", but maybe there are other places).
Now, let's see if we can actually somehow achieve what you want to do.
If you read gitmodules(5) [3], you'll notice that 'submodule.<name>.active' is not
listed in the list of settings that can be found in a '.gitmodules' file ! So whatever
you were expecting Git to do with these settings is not happening.
However, you'll also notice the setting `submodule.<name>.update`, which
can be set to 'none' (see also [4]). And this, I think, is closer to what you want:
git config -f .gitmodules submodule.one.update none
Try it out! with such a '.gitmodules', then
git clone --recurse-submodules
gives the following output:
$ git clone super-update/ clone-update --recurse-submodules
Cloning into 'clone-update'...
done.
Submodule 'one' (/var/folders/lr/r6n2057j0dzd4gdb614fp0740000gp/T/submodule-active/one) registered for path 'one'
Submodule 'two' (/var/folders/lr/r6n2057j0dzd4gdb614fp0740000gp/T/submodule-active/two) registered for path 'two'
Skipping submodule 'one'
Cloning into '/private/var/folders/lr/r6n2057j0dzd4gdb614fp0740000gp/T/submodule-active/clone-update/two'...
done.
Submodule path 'two': checked out 'd02974612a8f64c1fff7e9de1d90d488606103d2'
and 'one' is neither cloned nor checked out. Similarly you can do
git clone super-update clone-update
cd clone-update
git submodule update --init
and the last command outputs:
$ git submodule update --init
Submodule 'one' (/var/folders/lr/r6n2057j0dzd4gdb614fp0740000gp/T/submodule-active/one) registered for path 'one'
Submodule 'two' (/var/folders/lr/r6n2057j0dzd4gdb614fp0740000gp/T/submodule-active/two) registered for path 'two'
Skipping submodule 'one'
Cloning into '/private/var/folders/lr/r6n2057j0dzd4gdb614fp0740000gp/T/submodule-active/clone-update/two'...
done.
Submodule path 'two': checked out 'd02974612a8f64c1fff7e9de1d90d488606103d2'
and 'one' is neither cloned nor checked out.
> If this is not a bug but an error on my side, I would really appreciate some explanation about the active=false flag so I can achieve my purpose.
I hope the above helps!
Note that I don't have a lot of experience with the 'submodule.<name>.update=none'
setting, (especially how it interacts with `git checkout --recurse-submodules`)
so I'd be really interested to know if the approach above works for you.
Cheers,
Philippe.
[1] https://git-scm.com/docs/git-clone#Documentation/git-clone.txt---recurse-submodulesltpathspecgt
[2] https://git-scm.com/docs/git-submodule#Documentation/git-submodule.txt-init--ltpathgt82308203
[3] https://git-scm.com/docs/gitmodules
[4] https://git-scm.com/docs/git-submodule#Documentation/git-submodule.txt-none
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