Cygwin Ruby and $LOAD_PATH

[Steven Penny]

Cygwin Ruby $LOAD_PATH is under "/usr":

    $ ruby -e 'puts $LOAD_PATH' | sort
    /usr/lib/ruby/2.3.0
    /usr/lib/ruby/vendor_ruby/2.3.0
    /usr/local/lib/ruby/site_ruby/2.3.0
    /usr/local/share/ruby/site_ruby
    /usr/share/gems/gems/did_you_mean-1.0.2/lib
    /usr/share/ruby/2.3.0
    /usr/share/ruby/vendor_ruby
    /usr/share/rubygems

but Gems get installed to "/home":

    $ gem install org-ruby coderay
    $ gem which org-ruby coderay
    /home/Steven/.gem/ruby/2.3.0/gems/org-ruby-0.9.12/lib/org-ruby.rb
    /home/Steven/.gem/ruby/2.3.0/gems/coderay-1.1.2/lib/coderay.rb

This causes the Gems to not be found:

    $ cat alpha.org
    #+BEGIN_SRC rust
    fn main() {
      println!("alpha beta");
    }
    #+END_SRC

    $ org-ruby -d alpha.org
    Exception `LoadError' at
    /usr/local/share/ruby/site_ruby/rubygems/core_ext/kernel_require.rb:54 -
    cannot load such file -- coderay


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