How to "prefer source" for a few selected dependencies, and "prefer dist" for the rest?

How to "prefer source" for a few selected dependencies, and "prefer dist"
for the rest?

I would like to install all the dependencies that are maintained by me
using the "prefer source" option, and all the other dependencies not
maintained by me using "prefer dist".
Is that possible with Composer? I was thinking there might be something
like this, but I couldn't find it:
"my/dependency":"v1.2.3@dist",
"other/dependency":"v4.5.6@source",
Any ideas?