D front end implementation

[John Colvin via Digitalmars-d]

On Thursday, 17 November 2016 at 21:39:15 UTC, Timon Gehr wrote:
> On 17.11.2016 03:52, Stefan Koch wrote:
>> On Wednesday, 16 November 2016 at 09:11:50 UTC, Timon Gehr 
>> wrote:
>>>
>>> I want to get there eventually. :)
>>> Unfortunately I haven't had a lot of time to spend on this 
>>> lately.
>>> Also, DMD 2.060 has quite many annoying bugs that slow down 
>>> development.
>>
>> Sounds to me like you should rewrite the compiler a little to 
>> get it
>> working under 2.07x.
>>
>
> "A little" is probably not enough.

I'm interested to know what the big differences were that make 
updating particularly hard?