NOTE As of OS X 10.12 (Sierra), this fork has been abandoned.
NOTE: On March 28, 2014, the original repository was moved from dakcarto's github account to OSGeo's. On March 10, 2016, the OSGeo repo was forked by me to provide a single repo with a current gdal-20, grass7, qgis-214. This was primarily for my personal use, but I wanted it to be available for all in the OSGeo community. My ruby and homebrew coding is rudimentary at best, so there are some inelegant workarounds to make my life easier. Please feel free to improve things and provde pull request's against this repo.
This is a Mac homebrew formula tap for maintaining a STABLE work environment for the OSGeo.org geospatial toolset. This includes formulae that may not be specifically for an OSGeo project, but do extend the toolset's functionality.
These formulae may provide multiple versions of existing packages in the main homebrew taps. Such formulae are to temporarily ensure stability for the toolset, currency in formulae that have languished in the main repo, or to add extra options not found in the main taps.
Just brew tap jctull/osgeo4mac and then brew install <formula>.
If you have previously tapped the dakcarto/osgeo4mac repository or the homebrew/osgeo4mac repository do:
brew untap dakcarto/osgeo4mac
brew untap osgeo/osgeo4mac
brew tap jctull/osgeo4mac
brew tap --repair
Further, I wanted my gdal to take precedence over Homebrew/homebrew/gdal, but simply pointing to jctull/osgeo4mac/gdal-20 in my formulae was not working because homebrew traverses dependencies and was trying to install gdal from core Homebrew that was woefully out of date. To make things work for me, I took all formulae that use gdal and put them in jctull/osgeo4mac, specifically pointed them at jctull/osgeo4mac/gdal, and then pinned my tap so it would shadow formulae from Homebrew/homebrew or elsewhere. You can do this with:
brew tap-pin jctull/osgeo4mac
You can install formula from the tap explicitly, once tapped, with:
brew install jctull/osgeo4mac/<formula>
You can also install via URL:
brew install https://raw.github.com/jctull/homebrew-osgeo4mac/master/<formula>.rb
I want to acknowledge others that are likely much more competent than I am with ruby coding and more knowledgaeble about the nuances of the homebrew package management system. Larry Shaffer pioneered the osgeo4mac repo and came up with the bulk of the code to make life much simpler for Mac osgeo users. Sadly, his presence has diminished of late, thus my undertaking of this fork. Rainer M. Krug updated the grass formula, and I tweaked it a tiny bit to suit my needs. Similarly, Matthias Kuhn has been updating the qgis packages, and I made some minor modifications to those as well.
brew help, man brew, or the Homebrew wiki.