D with minimal runtime

[IGotD-]

On Monday, 15 June 2020 at 10:07:10 UTC, Walter Bright wrote:
>
> Since druntime is a library, only the functions actually 
> referenced are pulled out of the library when linking.

Still you need to compile druntime and if it finds any missing 
symbol there, the build will fail. Also the in druntime files 
often include other files in druntime which doesn't make it that 
easy.

As we have discussed before, the best way for this in my opinion 
is to have an abstract interface in druntime for the OS 
functions. This way we could stub those functions that the 
programmer doesn't need.