Does this library still work for Ruby 2.5.5 and R 4.1.0?

[davidkrider]

I'm trying to integrate R into my Rails app with this library as a gem, but calls to R just hang. I'm on macOS. I've added the gem and bundled, and installed R from Homebrew. As a raw, baseline test, I've created a test file with the example from the top of the rinruby.rb file. But when I try to run the example, it just hangs. When I kill it, I get this stack trace, and I have no idea how to start trying to fix it:

tasks git:(statistics) ✗ ruby test.rb
^CTraceback (most recent call last):
	7: from test.rb:7:in `<main>'
	6: from /Users/davidkrider/.rvm/gems/ruby-2.5.5/gems/rinruby-2.1.0/lib/rinruby.rb:349:in `method_missing'
	5: from /Users/davidkrider/.rvm/gems/ruby-2.5.5/gems/rinruby-2.1.0/lib/rinruby.rb:394:in `assign'
	4: from /Users/davidkrider/.rvm/gems/ruby-2.5.5/gems/rinruby-2.1.0/lib/rinruby.rb:760:in `assignable?'
	3: from /Users/davidkrider/.rvm/gems/ruby-2.5.5/gems/rinruby-2.1.0/lib/rinruby.rb:742:in `complete?'
	2: from /Users/davidkrider/.rvm/gems/ruby-2.5.5/gems/rinruby-2.1.0/lib/rinruby.rb:630:in `socket_session'
	1: from /Users/davidkrider/.rvm/gems/ruby-2.5.5/gems/rinruby-2.1.0/lib/rinruby.rb:744:in `block in complete?'
/Users/davidkrider/.rvm/gems/ruby-2.5.5/gems/rinruby-2.1.0/lib/rinruby.rb:744:in `read': Interrupt

[davidkrider]

It works on Linux with Ruby 2.5.8 and R 3.6.3.

[pddzaic]

I have the same issue in Windows 10, Ruby 2.6.8 and R 4.1.1. I can confirm, that the gem works with R 3.6.3.

By the way: Is this project dead?

[mcmaclachlan]

Same problem on RHEL 8, Ruby 2.7.1, R 4.1.1(and.2). Worked with R 4.0.5.

[martyn-w]

HI all, I had the same issue with Ruby 3, R 4.1.2. It turns out there was a breaking change in R 4.1.0 which blocks the ability to assign variables to the base environment. I've made a trivial fix (one line) in this PR which has resolved the problem: #55

irb(main):001:0> require "rinruby"
irb(main):002:0> R.eval("rnorm(5)")
[1] -1.4791180  1.2530975 -0.4628176  0.8099531  0.9796833

[intersimone999]

Thanks a lot @martyn-w, I had the same problem and I can confirm that it works now with your patch.

[davidkrider]

I haven't had a chance to confirm, but I'll take it from intersimone999 that it's GTG. Thanks!