I upgraded from Snow Leopard.
Git went missing, so I downloaded the .dmg and installed it: http://code.google.com/p/git-osx-installer/downloads/detail?name=git-1.7.6-x86_64-snow-leopard.dmg&can=2&q=
Uninstalled my current devtools: sudo /Developer/Library/uninstall-devtools
Installed Xcode via the App Store.
My compiled versions of ruby were busted (Note: this might have just been image magick), so I dropped the old versions I had and rebuilt with rvm. Installing with rvm requires explicitly declaring the c compiler:
rvm uninstall ree-1.8.7-2010.02
CC=/usr/bin/gcc-4.2 rvm install ree-1.8.7-2010.02
cd oomph-server
# gemset/rvm config occurs
gem install bundler
bundle
bundle install --bin-stubs
Reinstall image magick (you'll know it's broken if you run convert
and get a fail):
brew install image-magick
I had the above problem (with RVM) even though I had a clean install, and had let RVM install REE previously. Joyous this Lion is.