Bye bye, fast compilation times

[Nicholas Wilson]

On Wednesday, 7 February 2018 at 02:05:46 UTC, Timothee Cour 
wrote:
> how about using same syntax (and reusing logic) as newly 
> introduced:
> ` -i=+foo.bar,+baz-baz.bad`
>
> `dmd -unittest=+foo.bar,+baz,-baz.bad rest_of_arguments`
>
> which would only enable unittests as specified? It's flexible 
> and intuitive

I like it! That only leaves a question of defaults.