Re: [BuildStream] Proposal: Decouple source tracking and building

[Jürg Billeter <j bitron ch>]

Hi Tristan,

On Mon, 2019-10-21 at 11:37 +0900, Tristan Van Berkom via buildstream-
list wrote:
> [...]
>
> So, the main reason I added this long ago was indeed because I
> planned to use it in a very specific CI situation (besides the fact
> that I think it’s just a very cool feature, which is indeed
> subjective).
>
> Consider a CI scenario where you have many people committing to the
> master branch of many git repositories simultaneously and you just
> don’t have the horse power to run builds of all reverse dependencies
> for each commit (a scenario I happen to be facing right now
> actually), and you want to report build failures as fast as possible.

Would it be possible to use git post-receive hooks or triggers to
update the 'refs' in the BuildStream project instead of periodically
tracking all git repos? That would likely be faster overall.

This wouldn't work for external git repositories, of course. However,
in that case you would probably anyway want git mirroring to local
servers and that could again trigger the 'ref' updates.

Cheers,
Jürg