Others have written about this before, but I’ll underscore the sentiment that managing a local development environment on OS X where that environment requires Open Source Software is a royal pain. At the companies I’ve been involved with, we generally eschewed local development environments and instead gave everyone access to a development server that included the requisite databases and web servers and vhost entries. It worked OK, but there are some significant drawbacks. Namely, unit testing, environment experimentation, single point of failure if the dev environment goes down, and the needs of a developer to refresh their own copy of a dev database or make other similar changes tend to suffer.As a hobbyist with a simpler environment, or as a developer that’s deploying to Heroku or other cloud platform, local development is the way to go, and here is where Mac OS X makes life difficult. There are several package management systems out there that tend to step on each others’ toes (and it seems language and framework ecosystems always prefer the one that you’re not using). Mac OS X also tends to haphazardly ship versions of Python or Ruby or whatever that are a couple of versions behind, then not upgrade them until they do an OS refresh. That refresh (cough, Lion) will fail to mention it’s upending your world until you try to use your environment that’s always worked.Here’s my solution: just use VirtualBox. Deploy an Ubuntu or Debian server, link that server to your local development directory and you’re done. Then use the excellent package management that Linux affords to setup your environment in about ten seconds. This has another advantage in that you can also use all your deployment hooks (Chef or Puppet) that you’re using on your production servers.Once you’re up and running, here’s how I work: I edit and run git from outside the virtual machine, and run the environment and web browser from within the machine. Still todo: see if I can use my OS X browser to hit the virtual machine’s private IP so that all my tools are running externally (a little easier for workflow) so the virtual machine is just acting like an external server.Now you have a fully fledged (free, and always available) server, and you can still retain your Mac toolchain when and where you want it without worrying about Apple and OS X pulling the rug out from under you. Remember: encapsulation of a work environment is just as important as encapsulation of code.