[swift-dev] Turns out Incremental builds were not actually incremental

[Jordan Rose]

IIRC this was deliberate because of some past issues with things not getting rebuilt. In particular, even an incremental build should trash the module cache folder every build, and I don’t think we do this. Nicole, do you remember specifically why this was changed? (Or Mishal, when back from vacation?)

Jordan


> On Jul 19, 2016, at 09:32, Michael Gottesman via swift-dev <swift-dev at swift.org> wrote:
> 
> Given the backup in the CI, I started looking at what was going on there and I found that the following incremental bots were actually /NOT/ incremental:
> 
> 1. OS X Swift incremental.
> 2. 14.04 Linux Swift incremental.
> 3. 15.10 Linux Swift incremental.
> 4. OSX LLDB incremental
> 
> This is in addition to the smoke test bot which was also made non-incremental (I fixed it yesterday).
> 
> These are now incremental as they should be. This should reduce the load on the CI system.
> 
> Michael
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