We have a build that works on machines different than mine.. That's a progress! I didn't have enough time to merge upstream yet.
This build includes fix where you can compare files directly from the command line.
/Applications/Meld.app/Contents/MacOS/Meld file1 ~/file2
Cleaned up the osx folder and README.md. Everybody should be able to build..
Prefer a dark theme?
sudo nano /Applications/Meld.app/Contents/MacOS/Meld
You're welcome! :)