alt Hacker NewsI don't remember because I wasn't there :)
People are not complaining about the fact that C++ has modules, but about their usability and effectiveness. The compile time benefits seem modest and I have seen reports that it breaks Intellisense. (Maybe that's not true anymore?)
As Vittorio said, if it takes compiler vendors so long to implement them properly, maybe the design wasn't that good after all?
My point was: if you add such a big feature, shouldn't the standard require a sufficiently complete implementation? Otherwise, how can they assess whether the proposal actually works in practice and lives up to its promises?
Again, they had a sufficiently complete implementation. That implementation was in Visual Studio, clang had a very different implementation. The standard decided to take the Microsoft version. There are pros and cons to both and I will not fault the decision but either way one of the two had to lose and there is no surprise that for something complex it will take a long time to reimplement it to whatever the new standard is.