Migrating D front end to D - post Dconf

[Walter Bright]

On 5/11/2013 6:09 PM, Jonathan M Davis wrote:
> So, we might be better of restricting how much the compiler depends on - or we
> may decide that the workaround is to simply build the last C++ version of the
> compiler and then move forward from there. But I think that the issue should
> at least be raised.

Last month I tried compiling an older 15 line D utility, and 10 of those lines 
broke due to phobos changes.

I discussed this a bit with Andrei, and proposed that we keep around aliases for 
the old names, and put them inside a:

    version (OldNames) {
       alias newname oldname;
       ....
    }

or something like that.