README example not working

[joelmccracken]

When I tried this library, I wasn't able to get the demo to work:

irb(main):001:0> require 'micro_kanren'
=> true
irb(main):002:0> include MicroKanren::Core
=> Object
irb(main):003:0> include MicroKanren::MiniKanrenWrappers
=> Object
irb(main):004:0> res = call_fresh(->(q){ eq(q,5) }).call(empty_state)
=> #<Proc:0x007fdcb9221c60@/usr/local/lib/ruby/gems/2.1.0/gems/micro_kanren-0.0.2/lib/micro_kanren/
lisp.rb:6 (lambda)>                                                                               
irb(main):005:0> res.to_s
=> "#<Proc:0x007fdcb9221c60@/usr/local/lib/ruby/gems/2.1.0/gems/micro_kanren-0.0.2/lib/micro_kanren
/lisp.rb:6 (lambda)>"

[jsl]

Hi @joelmccracken, I'm sorry about the slow response. I guess I didn't have notifications turned on for this library previously.

I see from your output that you're running Ruby 2.1.0. I just noticed that the test suite for this library was failing when running with Ruby 2.1.0 on Travis. I just bumped the travis config to use 2.1.2, and the build is green on Travis now, as it is for me locally.

You would think that a patch level ruby version bump shouldn't change functionality, but it seems like perhaps that isn't the case between Ruby 2.1.0 and 2.1.2. Anyway, if you get a chance to try it on 2.1.2 please let me know if the test is successful.

Thanks!

[jsl]

I just tested on travis, and this works with all released versions of Ruby 2.0, 2.1 and 2.2. I'm guessing there was a bad patch level that was released somewhere in there that caused the failures. Anyway I updated the travis tests and the documentation based on the issue you raised. Please feel free to re-open if this is something that you can reproduce on a new Ruby and I'll take a look.

Thanks!