Re: Stop installing/updating apps in parallel

[Richard Hughes <hughsient gmail com>]

On 11 January 2018 at 09:56, Joaquim Rocha <jrocha endlessm com> wrote:
> I am sending this to the list to get others' opinions as this changes part
> of the basic behavior we have right now. And it should not be so trivial to
> implement either, so if we can avoid keeping both behaviors (i.e. dropping
> the parallel installation altogether) it'd be better.

I think we have to support one or the other. Architecturally, we can
either do this in a few different ways:

 * In the plugin loader to serialize the GsApp during Install
 * In the flatpak plugin directly
 * Have a scheduler object that we can offload the queue out of the
plugin loader
 * Just mark apps install buttons as insensitive until the current app
has finished installing
 * Use the "pending" queue to do this

I do think it has to be architecturally simple, and it certainly needs tests.

Richard