On Saturday, 24 December 2016 at 19:16:40 UTC, Joakim wrote:
Can we hold off on the performance discussion? Walter says this DIP isn't hard to implement (https://github.com/dlang/DIPs/pull/51#issuecomment-269077790), so we will run some numbers and see what we get. As you know, I too am skeptical of the benefit but Andrei has shown that import fanout has a non-negligible cost with his latest benchmark, and actual measurement will be the best way to decide.
The "problem" is that you'd be essentially measuring how inefficient the current DMD import management is rather than anything else.
When you push something on the user, you want to make sure it bring an actual benefit, not just allow to work around lousy existing implementation.
