http://briantjacobs.com/mrsid-gdal-homebrew/
brew install gdal --enable-unsupported --complete --with-postgres
https://github.com/nvkelso/geo-how-to/wiki/Installing-Open-Source-Geo-Software:-Mac-Edition
brew tap homebrew/science
brew install pyqt
https://xquartz.macosforge.org/landing/
brew install qgis --with-grass --with-postgis
brew linkapps
https://github.com/dwtkns/gdal-cheat-sheet
listgeo