I am trying to run the Mithril yeoman generator unfortunately it falls over on grunt serve with the error
Warning: Running "compass:server" (compass) task Warning: Couldn't find the compass binary. Make sure it's installed ...
I can of course use --force to continue and it works fine but the css is not included which is a bit pointless, and my next option would be to modify the gruntfile to only use Sass without Compass.
Note I have tried of the following suggestions from this issue log for grunt-contrib-compass:
npm install grunt-contrib-compass
sudo gem install sass
sudo gem install compass
Thanks
The answer was found here
In order to install compass On Mac OS X (Yosemite)
Set Up Ruby Environment, ensure its up to date
ruby -v
sudo gem update --system
Set Up MAC Environment, install Xcode Command Line Tools
xcode-select --install
This was the key to getting Compass working on OS X!
Install Sass
sudo gem install sass
Install Compass
sudo gem install compass