version(number) is completely useless

[Kagamin]

On Wednesday, 20 July 2022 at 01:34:00 UTC, Steven Schveighoffer 
wrote:
> The thing I miss the most for versions is a `version1 or 
> version2` mechanism.

You can already do it:
```
struct Version
{
     template opDispatch(string s)
     {
         mixin(`version(`~s~`)enum opDispatch=true;else enum 
opDispatch=false;`);
     }
}

static if(Version.OSX || Version.linux){}
else{}
```