developer has modified a few files from each library and included

with his application.

I'd like an opinion on whether:

applies.

I also enable source packages and issued:

dnf reqoquery --whatrequires qt-examples

dnf repoquery --whatrequires libqxt-devel

and it returned zero packages.

libqxt is no longer maintained:

and that project is recommending that you do what the develop did... which is 

not use the entire library and just pick out the parts you need.

qt-examples by the name seems to imply the same thing.  These are examples to

be modified and used.

The fact that repoquery returned zero for both tends to support this IMO...

What do you folks think?