JRuby support

[sobrinho]

I didn't checked the source yet but fork isn't supported by jruby:

$ rbenv rehash
NotImplementedError: fork is not available on this platform
        fork at org/jruby/RubyProcess.java:965
  __ensure__ at /Users/sobrinho/.rbenv/plugins/bundler/etc/rbenv.d/bundler/rehash.rb:133
    gemspecs at /Users/sobrinho/.rbenv/plugins/bundler/etc/rbenv.d/bundler/rehash.rb:129
      rehash at /Users/sobrinho/.rbenv/plugins/bundler/etc/rbenv.d/bundler/rehash.rb:246
        open at org/jruby/RubyIO.java:1139
        open at /Users/sobrinho/.rbenv/versions/jruby-1.6.7.2/lib/ruby/1.9/pathname.rb:829
      rehash at /Users/sobrinho/.rbenv/plugins/bundler/etc/rbenv.d/bundler/rehash.rb:245
        each at org/jruby/RubyHash.java:1186
      rehash at /Users/sobrinho/.rbenv/plugins/bundler/etc/rbenv.d/bundler/rehash.rb:226
        open at org/jruby/RubyIO.java:1139
        open at /Users/sobrinho/.rbenv/versions/jruby-1.6.7.2/lib/ruby/1.9/pathname.rb:829
      rehash at /Users/sobrinho/.rbenv/plugins/bundler/etc/rbenv.d/bundler/rehash.rb:225
      (root) at /Users/sobrinho/.rbenv/plugins/bundler/etc/rbenv.d/bundler/rehash.rb:410

[carsomyr]

What rbenv Rubies have been installed? In particular, what does
~/.rbenv/plugins/bundler/share/rbenv/bundler/ruby_profiles.yml look like?

[sobrinho]

  1.9.3-p194
* jruby-1.6.7.2 (set by /Users/sobrinho/.rbenv/version)
  ree-1.8.7-2012.02

:)

[carsomyr]

Thanks for the rbenv versions dump. Would you mind dumping ~/.rbenv/plugins/bundler/share/rbenv/bundler/ruby_profiles.yml too? The reason I ask is that the rehash.rb script attempts to exec a suitable Ruby, and JRuby is automatically disqualified for not supporting fork.

[sobrinho]

---
1.9.3-p194: !ruby/object:OpenStruct
  table:
    :ruby_version:
    - 1
    - 9
    - 3
    :gem_dir: !ruby/object:Pathname
      path: /Users/sobrinho/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1
    :gem_ruby_engine: ruby
    :gem_ruby_version: 1.9.1
jruby-1.6.7.2: !ruby/object:OpenStruct
  table:
    :ruby_version:
    - 1
    - 9
    - 2
    :gem_dir: !ruby/object:Pathname
      path: /Users/sobrinho/.rbenv/versions/jruby-1.6.7.2/lib/ruby/gems/1.8
    :gem_ruby_engine: jruby
    :gem_ruby_version: '1.9'
ree-1.8.7-2012.02: !ruby/object:OpenStruct
  table:
    :ruby_version:
    - 1
    - 8
    - 7
    :gem_dir: !ruby/object:Pathname
      path: /Users/sobrinho/.rbenv/versions/ree-1.8.7-2012.02/lib/ruby/gems/1.8
    :gem_ruby_engine: ruby
    :gem_ruby_version: '1.8'
system: !ruby/object:OpenStruct
  table:
    :ruby_version:
    - 1
    - 8
    - 7
    :gem_dir: !ruby/object:Pathname
      path: /Library/Ruby/Gems/1.8
    :gem_ruby_engine: ruby
    :gem_ruby_version: '1.8'

@carsomyr this helps? :)

[carsomyr]

Interesting... My jruby-1.6.7.2 is showing 1.8.7 compatibility. How did you pull off 1.9.2 compatibility? Is it a special build flag or the presence of Java 7?

[carsomyr]

I believe that your problem is fixed. Let me know if you get the same error.

[sobrinho]

@carsomyr I'm using a .jrubyrb file containing that:

compat.version=1.9

This makes jruby 1.9 compatible by default ;)

Your last commit fixed the issue, thanks!