sumtypes for D

[Walter Bright]

On 11/28/2022 6:46 PM, rikki cattermole wrote:
> Seriously, 2-3 days an actual dmd compiler dev could probably get ModuleInfo 
> exportation on Windows working correctly and we could get shared library support 
> in D starting to actually be decent.
> 
> Just that one fix would mean we could close FOUR issues extremely easily! And 
> add a whole new realm of possibilities for D.

When posting things like this, links to the bugzilla entries are most appreciated.