RVM 1.1.6
Ruby 1.9.2p0 (2010-08-18 revision 29036) [i686-linux]
Rails 2.3.14
Ubuntu 10.04.3 LTS
Radiant commit 6cec8e9feae93f8a4bb6f7c04bed91c282290a55
$ gem build radiant.gemspec
Successfully built RubyGem
Name: radiant
Version: 1.0.0.rc4
File: radiant-1.0.0.rc4.gem
$ gem install radiant
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/local/rvm/gems/ruby-1.9.2-p0/gems/radiant-1.0.0.rc4/INSTALL.md
$ rvmsudo gem install radiant
1 gem installed