Deeplearning frameworks aren't your normal machine learning frameworks. The real problem is CUDA, which isn't allowed to be distributed separately.

By comparison, here's what you need to install (manually!) for Torch on OSX:

  Homebrew
  Xcode
  cmake
  wget
  readline
  QT
  ffmpeg
  gnuplot
  opencv
  CUDA (and there's a whole other thread trying to get that to work..)

http://e-lab.github.io/html/wiki-torch7-installation.html