PGXN Utils fails on ruby 1.8 because json is missing.
$ ruby -v
ruby 1.8.7 (2010-06-23 patchlevel 299) [i686-linux]
$ gem install pgxn_utils
Successfully installed thor-0.14.6
Successfully installed rubyzip-0.9.4
Successfully installed zippy-0.1.0
Successfully installed pgxn_utils-0.1.1
4 gems installed
Installing ri documentation for thor-0.14.6...
Installing ri documentation for rubyzip-0.9.4...
Installing ri documentation for zippy-0.1.0...
Installing ri documentation for pgxn_utils-0.1.1...
Installing RDoc documentation for thor-0.14.6...
Installing RDoc documentation for rubyzip-0.9.4...
Installing RDoc documentation for zippy-0.1.0...
Installing RDoc documentation for pgxn_utils-0.1.1...
$ pgxn_utils
/home/dba/.rvm/rubies/ruby-1.8.7-p299/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- json (LoadError)
from /home/dba/.rvm/rubies/ruby-1.8.7-p299/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /home/dba/.rvm/gems/ruby-1.8.7-p299@pgxn/gems/pgxn_utils-0.1.1/lib/pgxn_utils.rb:2
from /home/dba/.rvm/rubies/ruby-1.8.7-p299/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /home/dba/.rvm/rubies/ruby-1.8.7-p299/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /home/dba/.rvm/gems/ruby-1.8.7-p299@pgxn/gems/pgxn_utils-0.1.1/bin/pgxn_utils:4
from /home/dba/.rvm/gems/ruby-1.8.7-p299@pgxn/bin/pgxn_utils:19:in `load'
from /home/dba/.rvm/gems/ruby-1.8.7-p299@pgxn/bin/pgxn_utils:19
PGXN Utils fails on ruby 1.8 because json is missing.