virtualenvwrapper 2.1.1

Notes:
 * Standalone install that doesn't touch your site-packages
 * virtualenv must be installed separately, per caveats

Formula/virtualenvwrapper.rb

@@ -0,0 +1,41 @@
+require 'formula'
+
+class Virtualenvwrapper <Formula
+  url 'http://www.doughellmann.com/downloads/virtualenvwrapper-2.1.1.tar.gz'
+  homepage 'http://www.doughellmann.com/projects/virtualenvwrapper/'
+  md5 '1c6543b1dc69574aa8fe973b07f3ec16'
+
+  def install
+    libexec.install ['virtualenvwrapper.sh', 'virtualenvwrapper']
+    # HACK: Make the wrapper exectuable, so `which` can find it.
+    chmod 0755, libexec+'virtualenvwrapper.sh'
+
+    bin.mkpath
+    ln_s libexec+'virtualenvwrapper.sh', bin
+  end
+
+  def caveats
+    <<-EOS.undent
+      This project depends on "virtualenv" which is installed separately. See:
+        http://pypi.python.org/pypi/virtualenv
+
+      From the project homepage:
+        1. Create a directory to hold all of the virtual environments.
+           The default is $HOME/.virtualenvs
+
+        2. Add two lines to your .bashrc to set the location where the
+           virtual environments should live and the location of the
+           script installed with this package:
+
+            export WORKON_HOME=$HOME/.virtualenvs
+            source #{HOMEBREW_PREFIX}/bin/virtualenvwrapper.sh
+
+        3. Run: source ~/.bashrc
+
+      Note that we did not install anything to your Python's site-packages.
+      If you want to write extensions you may need to add:
+        #{libexec}
+      to your PYTHON_PATH.
+    EOS
+  end
+end