Is it true that dub compiles everything in the source dir whether it's imported or not?

[Gary Willoughby]

On Saturday, 11 January 2014 at 13:01:26 UTC, Mike Parker wrote:
> I think adding an "excludedSourceFiles" entry to your 
> package.json is is what you want. See [1].
>
> [1] http://code.dlang.org/package-format

I've seen this but the problem is not with my project but a 
dependency. I only include two files from the dependency but when 
my project is compiled the entire source of the dependency is 
compiled and produces the error.