ResolvePackageDependencies is producing 6.5% of allocations in a build

[davkean]

In a customer solution I'm looking at, I see that ResolvePackageDependencies is producing 6.5% of all allocations for an up-to-date build:

Can we see if we can trim/remove unneeded allocations from this task.

[nguerrera]

Working on this.

[davkean]

👍

[nguerrera]

#2020 should bring this down to a bare minimum for the incremental (normal) build case. We now deserialize into ITaskItem[] with near zero waste when project.assets.json has not changed. However, I'm leaving this open after that goes in because we still use the old ResolvePackageDependencies for the dependencies node in the IDE. I will be working with project system folks to get that fixed next.

[nguerrera]

cc @abpiskunov @Pilchie

[nguerrera]

Fixed by #2020. Will use a separate issue for design-time build case.

[nguerrera]

#2100 tracks design-time build case now.