Krusader lists xxdiff, kompare and kdiff3 as supported diff programs. I think it should add meld to that list because meld is really awesome. Reproducible: Always Steps to Reproduce: 1. Launch krusader for the first time 2. See a list of diff programs 3. Notice meld's not there 4. Open Krusader handbook -> Features 5. Notice meld's not in the list of external diff programs
In Settings->Dependencies you can set meld as diff tool and it works. So it is actually possible(?)
tested again. Meld is part of Gnome and therefore not that known by KDE people. Still its working