Well, this is my personal experiment of the day but yes It works. ;-)
1) install all dependencies for build nmapsi4
2) download and install git
3) download and install runtime dependencies
4) get source
5) build istructions (after the git clone)
~# cd nmapsi4/
For Osx 10.7.x and later, change this line (no i386 anymore):
~nmapsi4/ --> # mkdir build/
~nmapsi4/build/ --> # cmake ../ (if the configure ends without issues)
~nmapsi4/build/ --> # make (if the build ends without issues)
6) start nmapsi4
~nmapsi4/build/ --> # sudo src/nmapsi4.app/Contents/MacOS/nmapsi4 (insert administrator password)
7) ... and ...