Speeding up importing Phobos files

Sat Jun 8 00:00:17 UTC 2019

On Friday, 7 June 2019 at 16:38:56 UTC, Seb wrote:

> Reading files is really cheap, evaluating templates and running 
> CTFE isn't. That's why importing Phobos modules is slow - not 
> because of the files it imports, but because of all the CTFE 
> these imports trigger.

Yes that make much more sense to me.  But, if that's the case, 
what's all the concern from Walter and Andrei expressed in this 
thread and in the conversations linked below?

https://forum.dlang.org/post/q7dpmg$29oq$1@digitalmars.com
https://github.com/dlang/druntime/pull/2634#issuecomment-499494019
https://github.com/dlang/druntime/pull/2222#issuecomment-398390889

Mike