Re: [Qemu-devel] [PATCH] scripts: use git archive in archive-source

["Daniel P. Berrangé" <berrange@redhat.com>]

On Thu, Jan 31, 2019 at 08:41:43AM +0100, Gerd Hoffmann wrote:
>   Hi,
> 
> > > +git archive --format tar $HEAD > "$tar_file"
> > > +test $? -ne 0 && error "failed to archive qemu"
> > >  for sm in $submodules; do
> > > -    git submodule update --init $sm
> > > -    test $? -ne 0 && error "failed to init submodule $sm"
> > > +	git submodule update --init "$sm"
> > 
> > The current archive-source.sh code is careful to not touch the
> > developer's current git checkout, because it runs  submodule
> > update in a clone'd tree. The earlier patch hunk gets rid of the
> > clone, so now submodule update is touching the developer's master
> > git checkout. IMHO this is not acceptable - running tests (which
> > use archive-source.sh) must never alter the developer's git checkout
> > status in any way.
> 
> Can easily be fixed, the sha1 can be pulled out of "git submodule
> status" instead of updating the submodules & use HEAD.
> 
> The only question is what to do best on uninitialized submodules.
> Options are:
>  * fetch the submodule into the developer tree (once).

As above, we shouldn't ever touch the developer's git state.

>  * clone the submodule into a temporary directory (each run).

IMHO this is the only option

>  * throw an error.

Definitely don't want this, as an uninitialized submodule is going to
be a common case for the 'dtc' module when people have the suitable
version already on their host, so this would break the CI scripts.

Regards,
Daniel
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