Installing ruby with rvm and homebrew
When I tried install ruby 1.9.3 I kept getting this error:
It seems your ruby installation is missing psych (for YAML output)
I checked my installations and found that I had libyaml located in /usr/local/Cellar/ courtesy of homebrew. The solution was to tell RVM where to find libyaml during install:
rvm install ruby-1.9.3-p0 --with-libyaml-dir=/usr/local/Cellar
You sir, are the man.