libyaml warning doesn't go away, even if you install libyaml
gem install bundler /home/ec2-user/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/yaml.rb:56:in `<top (required)>': It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby. Fetching: bundler-1.3.4.gem (100%) Successfully installed bundler-1.3.4 First remove any previous docs of yaml by
cd .rvm/src sudo rm -rf yaml* Then you can do rest of the install by -
rvm pkg install libyaml
P.S You will need to reinstall ruby after this.
rvm pkg seems to be deprecated. You can compile a source on your own. All you gotta do is download the latest version of libyaml from http://pyyaml.org/download/libyaml/ tar zxf yaml-0.1.4.tar.gz cd yaml-0.1.4 ./configure make make install \curl -L https://get.rvm.io | bash -s stable --rails --autolibs=enable If using homebrew, a temporary fix that worked for me was to run:
brew unlink libyaml && brew link libyaml plus you may also need to run:
brew unlink openssl && brew link --force openssl See this issue thread for more details: https://github.com/wayneeseguin/rvm/issues/2689
A friend of mine had a similar problem on his mac.
brew install libyaml
ended up working for us and we were able to avoid a reinstall of ruby.