Apple Font Tools cannot install in Macbook Pro El Capitan
Here is how I did it. Get it downloaded from apple (here: https://developer.apple.com/downloads/?q=font ) and run these.

pkgutil --expand OS\ X\ Font\ Tools.pkg tmp
cd tmp
cd fontTools.pkg
mv Payload Payload.gz
gunzip Payload
tar -xvf Payload


Apologies if I forgot any parts but that is basically it.