how to solve "ruby installation is missing psych" error?
for ubuntu and rvm
sudo apt-get install libtool
rvm pkg install libyaml
rvm reinstall 1.9.3
worked
In my case
rvm pkg install libyaml
and
rvm reinstall ruby-1.9.3-p125
solved the problem.
For people using Ubuntu, make sure that libtool
is installed prior to the steps above:
sudo apt-get install libtool
For macOS users (with homebrew):
rm -rf /usr/local/lib/ruby/gems/ && brew reinstall ruby