Incompatibility with Ruby 2.4.0

[sathomas]

Before submitting an issue, please be sure to

• Read the contributing instructions
• Update to the latest Gem version (either gem update github-pages or bundle update github-pages)

This issue affects

• The site generated by GitHub Pages
• Building sites locally

What did you do (e.g., steps to reproduce)

Ruby version 2.4.0

Gemfile:

source 'https://rubygems.org'
gem 'github-pages', group: :jekyll_plugins

bundle install

What did you expect to happen?

Gems should be installed

What happened instead?

An error occurred while installing json (1.8.3), and Bundler cannot
continue.
Make sure that `gem install json -v '1.8.3'` succeeds before bundling.

Additional information

• Link to the live site (if applicable):
• Link to the source repo (if applicable):

[parkr]

Hey! Thanks for reporting this issue. I hit this last night myself. The issue appears to be that the json gem won't compile on Ruby 2.4. ruby/json#303

I will try to take a look this week. It appears upgrading from json 1.x to json 2.x would solve the issue. We can see what exactly is depending on this gem and pass along the request to update and update it here as well.

[mjsteinbaugh]

I'm also seeing this on multiple macOS machines. The problem has to do with json 1.8.3 failing to build on ruby 2.4.0p0.

[parkr]

It appears we depend on activesupport which depends on json 1.x. We should see if the Rails team is willing to release a new 4.2.x which bumps the json dependency (or removes it).

[julou]

glad to see it's already on your radar! this makes my first contact with gh-pages rather painful :(

and?… is there any workaround to set up a gh-pages site locally with jekyll on macOS in the meantime?

[DirtyF]

@julou I recommend you use rbenv with Ruby 2.3.x and github-pages gem.

[nickserv]

Note that you can brew install rbenv, it will give you suggestions on how to set it up for your shell. 😄

[georgeperez]

There's additional instructions in their repo.

[julou]

awesomely fast! thank you so much.
for others, here's a step-by-step:

1. install rbenv (using an admin account)

brew install rbenv

2. install ruby 2.3.1 and corresponding gems (stored in ~/.rbenv)
   NB: do this with the account with which you will use jekyll later (i.e. probably your regular account)

rbenv init
rbenv install 2.3.1
gem install bundler

3. now in your gh-pages directory

# cd my-gh-pages-site
bundle install

but I can't get rbenv init to add ~/.rbenv/shims to my PATH!?!
Looks like I have to add export PATH=~/.rbenv/shims:$PATH or export RBENV_VERSION=2.3.1 in my .bashrc
Am I missing something obvious?

[DirtyF]

• run rbenv rehash to rehash your shims after install (https://github.com/rbenv/rbenv#rbenv-rehash)
• add eval "$(rbenv init -)" in your .zshrc or .bashrc

[julou]

thx! 👍

[parkr]

It appears they're working on activesupport fixes for Ruby 2.4 here: rails/rails#27473

[mjsteinbaugh]

Using rbenv with ruby 2.3.1 works on macOS 10.12.2:

Install rbenv first with Homebrew:

brew install rbenv

Now modify your ~/.bash_profile:

export PATH=~/.rbenv/shims:$PATH
eval "$(rbenv init -)"

Finally, install ruby 2.3.1 and the github-pages gem:

rbenv install 2.3.1
rbenv versions
rbenv global 2.3.1
rbenv rehash
gem install bundler
gem install github-pages

[bigeagle]

1/3 a year has passed, but the solution to this issue is still: go back to ruby 2.3

[parkr]

@bigeagle I am able to run Jekyll on 2.4. Can you help provide more details?

[cveneziani]

The Rails team released a new version of activesupport (v4.2.8). Bumipng this gem should solve the incompatibility with ruby 2.4.

[parkr]

I'm able to run bundle install with Ruby 2.4.1 locally without any modifications to this repository. Can anyone confirm?

[bigeagle]

It worked, finally.

[parkr]

Great to hear!

[adamralph]

Still doesn't work for me with Ruby 2.4. I get errors with yajl-ruby v 1.2.1. Apparently, yajl-ruby 1.3.0 needs to be used with Ruby 2.4.

[parkr]

yajl-ruby 1.2.2 works fine with Ruby 2.4. Please bundle update yajl-ruby or run gem install yajl-ruby -v 1.2.2.