Hi, I'm trying to install iRuby for the first time. I'm using OS X El Capitan. I've installed Jupyter/iPython and it's working fine. When I try to install iruby using gem install iruby, I get the following error

Building native extensions.  This could take a while...
ERROR:  Error installing iruby:
        ERROR: Failed to build gem native extension.

    /usr/local/var/rbenv/versions/2.2.2/bin/ruby -r ./siteconf20151109-82110-ok5sa9.rb extconf.rb
"./autogen.sh"
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal -I config --force -I config
autoreconf: configure.ac: tracing
autoreconf: configure.ac: subdirectory foreign/openpgm/build-staging/openpgm/pgm/ not present
autoreconf: configure.ac: not using Libtool
autoreconf: running: /usr/local/Cellar/autoconf/2.69/bin/autoconf --include=config --force
configure.ac:57: error: possibly undefined macro: AC_LIBTOOL_WIN32_DLL
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
configure.ac:58: error: possibly undefined macro: AC_PROG_LIBTOOL
configure:5346: error: possibly undefined macro: AC_DISABLE_STATIC
configure:5350: error: possibly undefined macro: AC_ENABLE_STATIC
autoreconf: /usr/local/Cellar/autoconf/2.69/bin/autoconf failed with exit status: 1
autogen.sh: error: autoreconf exited with status 0
ZeroMQ autogen failed!
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/usr/local/var/rbenv/versions/2.2.2/bin/$(RUBY_BASE_NAME)
        --with-system-libs
        --without-system-libs

extconf failed, exit code 1

Gem files will remain installed in /usr/local/var/rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/rbczmq-1.7.9 for inspection.
Results logged to /usr/local/var/rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-14/2.2.0-static/rbczmq-1.7.9/gem_make.out

Exactly as the title says. The automatic indentation is 4 spaces, but the default for Ruby is 2.

According to this stackoverflow answer, it should be quite simple to modify.

There was a Kernel error on

• iruby commit 4e37c78
• Python 3.4.3 32bit (downloaded from www.python.org)
• IPython 3.1.0 (installed with pip install)

I uploaded the log to

https://gist.github.com/kozo2/1b2799a45381f911089f

I found puts doesn't work with multiple arguments.

with pry

~ ❯❯❯ ruby --version
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-darwin14]
~ ❯❯❯ pry
[1] pry(main)> puts "A", "B"
A
B
=> nil

with iruby

~ ❯❯❯ iruby --version
2.1.0

~ ❯❯❯ iruby
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/iruby-0.1.13/lib/iruby/kernel.rb:175: warning: duplicated key at line 176 ignored: :type_class

In [1]: puts "A", "B"
ArgumentError: wrong number of arguments (2 for 1)
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/iruby-0.1.13/lib/iruby/ostream.rb:36:in `puts'
(pry):1:in `puts'
(pry):1:in `<main>'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:355:in `eval'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:355:in `evaluate_ruby'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:323:in `handle_line'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:243:in `block (2 levels) in eval'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:242:in `catch'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:242:in `block in eval'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:241:in `catch'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/pry-0.10.1/lib/pry/pry_instance.rb:241:in `eval'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/iruby-0.1.13/lib/iruby/backend.rb:28:in `eval'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/iruby-0.1.13/lib/iruby/kernel.rb:110:in `execute_request'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/iruby-0.1.13/lib/iruby/kernel.rb:62:in `run'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/iruby-0.1.13/lib/iruby/command.rb:30:in `run_kernel'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/iruby-0.1.13/lib/iruby/command.rb:16:in `run'
/Users/mic/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/iruby-0.1.13/bin/iruby:6:in `<top (required)>'
/Users/mic/.rbenv/versions/2.2.2/bin/iruby:23:in `load'
/Users/mic/.rbenv/versions/2.2.2/bin/iruby:23:in `<main>'

Show how each of the following gems can be used with iruby:

• NMatrix
• Nyaplot
• Daru
• Statsample

There can be examples that use daru/nmatrix for storing data, statsample for analysis and nyaplot to plot it.

I tried installing iruby using RVM into my global gemset. Now, I'm getting the following error:

$ iruby
Could not load bundler: Could not locate Gemfile or .bundle/ directory
W, [2015-08-06T05:22:30.899010 #26154]  WARN -- : Could not load bundler: Could not locate Gemfile or .bundle/ directory
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/bundler-1.8.4/lib/bundler.rb:198:in `rescue in root'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/bundler-1.8.4/lib/bundler.rb:194:in `root'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/bundler-1.8.4/lib/bundler.rb:101:in `bundle_path'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/bundler-1.8.4/lib/bundler.rb:420:in `configure_gem_home_and_path'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/bundler-1.8.4/lib/bundler.rb:92:in `configure'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/bundler-1.8.4/lib/bundler.rb:153:in `definition'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/iruby-0.2.7/lib/iruby/command.rb:109:in `check_bundler'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/iruby-0.2.7/lib/iruby/command.rb:67:in `run_kernel'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/iruby-0.2.7/lib/iruby/command.rb:34:in `run'
/Users/yosriady/.rvm/gems/ruby-2.2.0@global/gems/iruby-0.2.7/bin/iruby:5:in `<top (required)>'
/Users/yosriady/.rvm/rubies/ruby-2.2.0/bin/iruby:23:in `load'
/Users/yosriady/.rvm/rubies/ruby-2.2.0/bin/iruby:23:in `<main>'
/Users/yosriady/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
/Users/yosriady/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'

Any ideas? I also tried requiring gnuplot in my Ruby notebooks, and it fails.

LoadError: cannot load such file -- gnuplot

Currently only the notebook is working well since this was the focus. However we should also get the console working well:

• https://github.com/minad/iruby/issues/52 (Multiline methods not working)
• https://github.com/minad/iruby/issues/51 (Syntax highlighting)
• https://github.com/minad/iruby/issues/47 (Quit/exit not working)
• https://github.com/minad/iruby/issues/48 (Autocomplete issue)

I was able to install fine on ubuntu but would love to be able to install and use this on my main development mac.

Building native extensions. This could take a while... ERROR: Error installing iruby: ERROR: Failed to build gem native extension.

If pry detects an incomplete chunk of code, like this

def foo

it will wait until the input is complete to continue. I'm sure most IRuby users have bumped into this at some point and just reset the kernel. The problem is that there is no way to tell @pry.eval in backend.rb that there is no more input on its way.

There is a hint that things went south: If after running @pry.eval, there is still code in @pry.eval_string, then pry is waiting. Ideally, we should throw a syntax error and run @pry.reset_eval_string.

I would have submitted a PR, but I honestly wasn't sure if I should just reset the eval_string or if there were other things that needed to be cleaned up too. Either way, this shouldn't be terribly difficult to fix.

Will it possible to define some sort of a constant or something similar that will let a ruby script query if it is running in the iruby browser environment?

This will allow optionally running code that will fancifully print stuff in iruby format (HTML) only when it is running in the iruby browser environment, and something else when running in the console (irb, pry,etc.).

To demonstrate:

if RUNNING_IN_IRUBY_BROWSER
  print "<h1>This is in iruby<h1>"
else
  print "This is in console"
end

Reproduce:
In a shell type: iruby ->
(I'm getting warnings at that point already:

/usr/local/lib/python2.7/dist-packages/IPython/kernel/manager.py:95: UserWarning: Setting kernel_cmd is deprecated, use kernel_spec to start different kernels.
  warnings.warn("Setting kernel_cmd is deprecated, use kernel_spec to "
/home/eyal/.rvm/gems/ruby-2.2.0/gems/iruby-0.1.13/lib/iruby/kernel.rb:175: warning: duplicated key at line 176 ignored: :type_class

) ->
After entering the iruby console, before entering any other command, click ^C ->
after doing so I receive the following error:

 Kernel died: 
/home/eyal/.rvm/gems/ruby-2.2.0/gems/ffi-rzmq-2.0.4/lib/ffi-rzmq/util.rb:38:in `zmq_errno'
/home/eyal/.rvm/gems/ruby-2.2.0/gems/ffi-rzmq-2.0.4/lib/ffi-rzmq/util.rb:38:in `errno'
/home/eyal/.rvm/gems/ruby-2.2.0/gems/ffi-rzmq-2.0.4/lib/ffi-rzmq/util.rb:93:in `raise_error'
/home/eyal/.rvm/gems/ruby-2.2.0/gems/ffi-rzmq-2.0.4/lib/ffi-rzmq/util.rb:73:in `error_check'
/home/eyal/.rvm/gems/ruby-2.2.0/gems/iruby-0.1.13/lib/iruby/session.rb:38:in `recv'
/home/eyal/.rvm/gems/ruby-2.2.0/gems/iruby-0.1.13/lib/iruby/kernel.rb:59:in `run'
/home/eyal/.rvm/gems/ruby-2.2.0/gems/iruby-0.1.13/lib/iruby/command.rb:30:in `run_kernel'
/home/eyal/.rvm/gems/ruby-2.2.0/gems/iruby-0.1.13/lib/iruby/command.rb:16:in `run'
/home/eyal/.rvm/gems/ruby-2.2.0/gems/iruby-0.1.13/bin/iruby:6:in `<top (required)>'
/home/eyal/.rvm/gems/ruby-2.2.0/bin/iruby:23:in `load'
/home/eyal/.rvm/gems/ruby-2.2.0/bin/iruby:23:in `<main>'
/home/eyal/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
/home/eyal/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'

KeyboardInterrupt

I use Ruby 2.2.2 installed via rbenv on Ubuntu 15.04.
IRuby installed without problems, but when I tried to run iruby notebook it couldn't load any gems, giving error messages like:

LoadError: cannot load such file -- some_gem_i_have_installed
/usr/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
...

After spending an hour, trying to make it work, I ended up switching to system Ruby via rbenv shell system, and installing all my gems into system Ruby. After that everything worked fine.

Is there a way to make iruby work with rbenv Ruby without reinstalling all the gems into system Ruby?

I followed the Windows installation instructions on the master branch README and gem install iruby -v 0.1.13 for Python27. However, I got the following:

$ iruby notebook
[ProfileCreate] Generating default config file: u'C:\Users\Matt.config\iruby\profile_d efault\ipython_config.py'
[ProfileCreate] Generating default config file: u'C:\Users\Matt.config\iruby\profile_d efault\ipython_kernel_config.py'
[ProfileCreate] Generating default config file: u'C:\Users\Matt.config\iruby\profile_d efault\ipython_console_config.py'
[ProfileCreate] Generating default config file: u'C:\Users\Matt.config\iruby\profile_d efault\ipython_qtconsole_config.py'
[ProfileCreate] Generating default config file: u'C:\Users\Matt.config\iruby\profile_d efault\ipython_notebook_config.py'
[ProfileCreate] Generating default config file: u'C:\Users\Matt.config\iruby\profile_d efault\ipython_nbconvert_config.py'
C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/iruby-0.1.13/lib/iruby/command.rb:89:in readlink': readlink() function is unimplemented on this machine (NotImplementedError) from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/iruby-0.1.13/lib/iruby/command.rb:89:increate_profile'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/iruby-0.1.13/lib/iruby/command.rb:62:in run_ipython' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/iruby-0.1.13/lib/iruby/command.rb:18:inrun'
from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/iruby-0.1.13/bin/iruby:6:in <top (requ ired)>' from C:/Ruby200-x64/bin/iruby:23:inload'
from C:/Ruby200-x64/bin/iruby:23:in `

'
Creating profile directory C:/Users/Matt/.config/iruby/profile_default

IRuby should use a ruby Logger to log rather than directly output to stderr.

My question is, is it necessary to use a multi-logger? The scenarios I can imagine are

1. In development mode, developers need to inspect messages from or to ZMQ.
2. In production mode, users may want to log to a file.

The cell[8] works fine on the command line, but on iruby notebook fails like this.
https://gist.github.com/kozo2/cfc5b7606cbfa7e8b5f4

Please refer to the following issue
SciRuby/sciruby-notebooks#6

Original issue: https://github.com/minad/iruby/issues/28

I didn't observe this one, but we should check this again.

Hi,

Would be awesome to use this within the context that rails c sets up. Is this possible?

Thanks!

I updated to IRuby 0.2.0 recently and noticed a bug in which tab completion removes the preceding lines in the cell when I'm in the last line, or doesn't work at all when there are lines after the one I'm on. Take a look at these examples:

puts 123
puts 'asdf'
puts IRuby::VERSION.a<TAB>

In this case, I can choose a method when I press , but if I select one, the other lines are removed and the only one left is the last one (e.g. puts IRuby::VERSION.abs). If I press ESC and don't select a method, the cell is left as is.

puts 123
puts 'asdf'
puts IRuby::VERSION.a<TAB>
puts "fourth line"

In this case, when I press with the cursor in the third line, nothing happens.

Is there any other information you folks need? Or is this a known bug? I couldn't find anything about it in the issue tracker.

Hi, I've found this very interesting (FileLink)[http://nbviewer.jupyter.org/github/ipython/ipython/blob/1.x/examples/notebooks/Part%205%20-%20Rich%20Display%20System.ipynb#Links-to-local-files] function in Jupyter / Python for making local files downloadable via HTTP.

Is it possible to do something similar in iruby?

thanks!

Try this at at try.jupyter.org:

1. Open Ruby notebook.
2. Put in one line, e.g.
   puts "hello"
3. Use menu File > Download as > Ruby (rb). Result is error:
   500 : Internal Server Error
   The error was:
   nbconvert failed: FileExtension trait 'file_extension' does not begin with a dot: 'rb'

Note that unlike other Download formats in the pulldown menu, "Ruby (rb)" does not have a dot before the extension in parens.

Workaround is to download as Python and rename the .py file to .rb. Bug reproduced using rvm with Ruby 2.2 and iruby gem on OS X 10.10.3 laptop.

It works at times, but sometimes the kernel suddenly dies with this backtrace:

[2015-06-03T00:28:50.445538 #7036] FATAL -- : Kernel died: cannot load such file -- iruby
/home/sameer/.rvm/gems/ruby-2.2.1/gems/iruby-0.2.4/lib/iruby/command.rb:73:in `require'
/home/sameer/.rvm/gems/ruby-2.2.1/gems/iruby-0.2.4/lib/iruby/command.rb:73:in `run_kernel'
/home/sameer/.rvm/gems/ruby-2.2.1/gems/iruby-0.2.4/lib/iruby/command.rb:33:in `run'
/home/sameer/.rvm/gems/ruby-2.2.1/gems/iruby-0.2.4/bin/iruby:5:in `<top (required)>'
/home/sameer/.rvm/gems/ruby-2.2.1/bin/iruby:23:in `load'
/home/sameer/.rvm/gems/ruby-2.2.1/bin/iruby:23:in `<main>'
/home/sameer/.rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `eval'
/home/sameer/.rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `<main>'
/home/sameer/.rvm/gems/ruby-2.2.1/gems/iruby-0.2.4/lib/iruby/command.rb:73:in `require': cannot load such file -- iruby (LoadError)
    from /home/sameer/.rvm/gems/ruby-2.2.1/gems/iruby-0.2.4/lib/iruby/command.rb:73:in `run_kernel'
    from /home/sameer/.rvm/gems/ruby-2.2.1/gems/iruby-0.2.4/lib/iruby/command.rb:33:in `run'
    from /home/sameer/.rvm/gems/ruby-2.2.1/gems/iruby-0.2.4/bin/iruby:5:in `<top (required)>'
    from /home/sameer/.rvm/gems/ruby-2.2.1/bin/iruby:23:in `load'
    from /home/sameer/.rvm/gems/ruby-2.2.1/bin/iruby:23:in `<main>'
    from /home/sameer/.rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `eval'
    from /home/sameer/.rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `<main>'

Hi!
We've upgraded from ipython to jupyter and everthing seems to be working fine.

The only missing part, is that I'm not too sure how to pass this parameters to the kernel.

We used to do this using KernelManager.kernel_cmd but it's deprecated in Jupyter.

Specificaly, I'm wondering how to pass the boot_file path to iruby.

thanks!

Hi @domitry,

could you port your https://github.com/minad/iruby/pull/30 patches to the new version? Unfortunately I cannot test on windows.

Hi! I know this would be better on the actual jupyter repo but wanted to ping you here since this is more active for Rubyists. try.jupyter.org already has a Ruby kernel built in so all that the repo needs is a ruby notebook with a quick few cells of welcome content.

here's their repo: https://github.com/jupyter/docker-demo-images

I could do it but am a ruby novice. Better someone who can showcase why it would be nice to have ruby on a notebook, right?

1. The next iruby gem version starting from iruby 0.2 will drop support for IPython versions < 3
2. The iruby 0.1 series will still continue IPython 2, but only urgent bug fixes will be backported

This change is necessary since IPython3 introduces protocol changes and is optimized for other language kernels. With IPython4, the language agnostic part will go to the project http://jupyter.org/

See original issues:

• https://github.com/minad/iruby/issues/39 (Discussion about versions)
• https://github.com/minad/iruby/issues/1, https://github.com/minad/iruby/issues/33 (Issue with iruby directory, we will follow the IPython3 convention for other language kernels starting from version 0.2)
• https://github.com/minad/iruby/issues/5 (CSS issue, revisit this for IPython 3)

Currently there are only a few tests. This is unacceptable if we want to achieve higher user adoption.

• Get travis-ci green
• Use https://github.com/jupyter/jupyter_kernel_test
• Increase coverage

See jupyter/docker-demo-images#46

see methodmissing/rbczmq#41

There is still one failure happening. Should be rooted out.

Currently seeing this error when launching notebook using Python3

gems/iruby-0.2.5/lib/iruby/command.rb:73:in `require': cannot load such file -- iruby (LoadError)

Timeout waiting for kernel_info reply from ...

Somethings wrong with 0mq at startup.

It would be good for folks to know that this is the "official" version by fully breaking it off from the originating repos, either by getting it transferred or by creating it as a wholly new repo. There might be a way to put a ticket in to GitHub to make this a source rather than a fork too. Not sure though.

Hi,

This isn't an issue but rather a question. I see that for the current iteration, the min required version for ruby is 2.1.0.

I need to use ruby 2.0.0 because I'm using it to access one (and actually only one) API that works only on 2.0.0.

Can I use IRuby with ruby 2.0.0? How?

Thanks !

I could not install iRuby gem. The problem seems to be occurring during in the installation of the rbczmq 1.7 dependency.

Here is the gem make.out message logged on the C:\Ruby22-x64\lib\ruby\gems\2.2.0\extensions\x64-mingw32\2.2.0\rbczmq-1.7.9.

The message content follows:

C:/Ruby22-x64/bin/ruby.exe -r ./siteconf20150720-6208-162dmho.rb extconf.rb
checking for windows.h... yes
checking for winsock.h... yes
checking for main() in -lkernel32... yes
checking for main() in -lrpcrt4... yes
checking for main() in -lgdi32... yes
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.

Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=C:/Ruby22-x64/bin/$(RUBY_BASE_NAME)
--with-kernel32lib
--without-kernel32lib
--with-rpcrt4lib
--without-rpcrt4lib
--with-gdi32lib
--without-gdi32lib
extconf.rb:49:in `

extconf failed, exit code 1

See https://github.com/minad/iruby/issues/37

I've got a case of this:

❯ jupyter qtconsole --kernel=ruby
W, [2015-12-16T18:04:53.245480 #44379]  WARN -- : Could not load bundler: Could not locate Gemfile or .bundle/ directory
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:198:in `rescue in root'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:194:in `root'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:101:in `bundle_path'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:435:in `configure_gem_home'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:427:in `configure_gem_home_and_path'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:92:in `configure'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:153:in `definition'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:109:in `check_bundler'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:67:in `run_kernel'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:34:in `run'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/bin/iruby:5:in `<top (required)>'
/usr/local/var/rbenv/versions/2.2.0/bin/iruby:23:in `load'
/usr/local/var/rbenv/versions/2.2.0/bin/iruby:23:in `<main>'
ruby(44379,0x7fff7882d300) malloc: *** error for object 0x7f8b2e2b2528: incorrect checksum for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
[JupyterQtConsoleApp] KernelRestarter: restarting kernel (1/5)
[JupyterQtConsoleApp] WARNING | kernel restarted
W, [2015-12-16T18:04:55.928800 #44385]  WARN -- : Could not load bundler: Could not locate Gemfile or .bundle/ directory
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:198:in `rescue in root'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:194:in `root'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:101:in `bundle_path'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:435:in `configure_gem_home'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:427:in `configure_gem_home_and_path'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:92:in `configure'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:153:in `definition'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:109:in `check_bundler'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:67:in `run_kernel'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:34:in `run'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/bin/iruby:5:in `<top (required)>'
/usr/local/var/rbenv/versions/2.2.0/bin/iruby:23:in `load'
/usr/local/var/rbenv/versions/2.2.0/bin/iruby:23:in `<main>'
ruby(44385,0x7fff7882d300) malloc: *** error for object 0x7f8085d3c398: incorrect checksum for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug

The error keeps respawning unless I Ctrl-C or close the qtconsole. And the similar:

❯ jupyter console --kernel=ruby
W, [2015-12-16T18:10:25.110421 #44674]  WARN -- : Could not load bundler: Could not locate Gemfile or .bundle/ directory
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:198:in `rescue in root'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:194:in `root'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:101:in `bundle_path'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:435:in `configure_gem_home'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:427:in `configure_gem_home_and_path'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:92:in `configure'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.9.2/lib/bundler.rb:153:in `definition'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:109:in `check_bundler'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:67:in `run_kernel'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/lib/iruby/command.rb:34:in `run'
/usr/local/var/rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/iruby-0.2.8/bin/iruby:5:in `<top (required)>'
/usr/local/var/rbenv/versions/2.2.0/bin/iruby:23:in `load'
/usr/local/var/rbenv/versions/2.2.0/bin/iruby:23:in `<main>'
ruby(44674,0x7fff7882d300) malloc: *** error for object 0x7f904305a508: incorrect checksum for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
Jupyter Console 4.0.3

[ZMQTerminalIPythonApp] Loading IPython extension: storemagic

Which hangs until I force TERM the process.
Ruby version is:

ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-darwin13]

I'm on OSX Yosemite 10.10.5, I installed jupyter in a pyenv something like

pyenv virtualenv 3.5 jupyter
pyenv activate jupyter
pip install jupyter

My kernels are:

  ruby       /Users/<user>/.ipython/kernels/ruby
  python3    /usr/local/var/pyenv/versions/jupyter/lib/python3.5/site-packages/ipykernel/resources
  ir         /usr/local/share/jupyter/kernels/ir

and they seem to work except the ruby one.

The use case is the following: I have a long data massaging loop like

entries.each do 
  begin
    ... a lot of stuff that can go wrong
  rescue => e
   binding.pry
  end

if an error occur, I end up inside a pry session and I can properly inspect the data, error and eventually re-run the computation.

If I do this from within a notebook though the new pry session is launched in the underlying terminal, somewhat conflicting with the notebook logs.

It would be awesome to have the ability to launch a sub-repl from the notebook and interact with it.
Would this be possible, or it maybe already is, or does what I'm saying not even make sense?

Anyway, thanks for your work on iRuby, it's awesome.

I updated Ruby version, and manage ruby envrionment with rbenv.
Current iruby gem is installed under Ruby version 2.3.0-dev.
But jupyter kernels list does not update. I tried command iruby register --force. It does not register a new version ruby kernel. (I check out new kernel in jupyter notebook button New.)
Then I try to find out why. I checked out ~/.ipython/kernels/ruby/kernel.json. It is version 2.3.0.

{"argv":["/home/stardiviner/.gem/ruby/2.3.0/bin/iruby","kernel","{connection_file}"],
"display_name":"Ruby 2.3.0","language":"ruby"}

There is no other kenel configs under ~/.ipython/kernels/.
I don't know why jupyter notebook can't find new version ruby kernel.

This is the same as IRkernel/IRkernel#139, but for this kernel.

The messaging spec says:

To disable authentication and signature checking, set the key field of a connection file to an empty string.

Even with the key set to the empty string, IRuby throws an error when it gets messages that have empty signature fields, which means that it does not currently work with Hydrogen (nteract/hydrogen#49)

See kernel.json and kernel.css

I get this really weird issue with iRuby when I just add the nyaplot gem on osx - see domitry/nyaplot#55 for more details, but just wondering if anyone understands the iruby portion of the error message:

iruby-0.2.7/lib/iruby/utils.rb:8:in `display': undefined method `session' for nil:NilClass (NoMethodError)

They suggest using methodmissing/rbczmq. But I don't see much difference between them.

We need documentation which explains the following:

1. How to get a working IPython installation with up-to-date IPython3 on different operating systems
2. Explain basic iruby usage

See original documentation issue https://github.com/minad/iruby/issues/31

After I did a bundle install from the Gemfile I get the following error message every time I start Pry/Iruby console:

require 'pry-syntax-hacks' # Failed, saying: undefined method `retrieve_line' for class `Pry'

$ pry --version
Pry version 0.10.1 on Ruby 2.2.0

Does it work for anybody else?

There is an 2 years old open issue for this at ConradIrwin/pry-syntax-hacks#2 but the gem is not maintained anymore for almost 3 years, falling behind the very active development of the main pry gem. Since it not working anymore, unmaintained and even has hacks in its name, I suggest we remove it from the Gemfile.

Does this have any negative effects on the pry backend for IRuby I overlooked?

This part of the protocol is not yet implemented.

A possible solution to having a Gemfile in the directory where the iruby command is run would be create a temporary file called Gemfile and add all the gems yielded by gem list to that file, in the format required by Gemfiles.

Once the notebook is terminated, we can delete the Gemfile as a cleanup operation.

This can be done only if a Gemfile is not present in the directory, in which case the default Gemfile will be used.