Issue with Autoprefixer Rails plugin

[nhoizey]

I had a issue with the Autoprefixer Rails plugin, but the author thinks it's because Jekyll Assets still uses an old API: https://github.com/ai/autoprefixer-rails/issues/81#issuecomment-166874195

I'm still using Jekyll 2, all the plugins I use not being available for Jekyll 3.

My code: https://github.com/nhoizey/nicolas-hoizey.com/

[ai]

@envygeeks ping me if you need any help.

[envygeeks]

Unfortunately we no longer issue fixes for Jekyll Assets Legacy, it's Sprockets is old (2.0), and all it's plugins are old. AFAIW we do use the new API on current Jekyll Assets (if you could confirm @ai via: https://github.com/jekyll/jekyll-assets/blob/master/lib/jekyll/assets/addons/autoprefixer.rb)

[ai]

@envygeeks yeap, looks like new Jekyll Assets uses correct new API.

[nhoizey]

So it means I have to keep outdated versions, or migrate to Jekyll 3 but remove obsolete plugins… tricky… :-/

[nhoizey]

When I try to force v3.0.1 in my Gemfile:

source "https://rubygems.org"

gem "jekyll", '=3.0.1'
gem "redcarpet"
gem "yt"
gem "rouge"

group :jekyll_plugins do
  gem "jekyll-picture-tag"
    gem "jekyll-tagging"
  gem "sass", :require => "sass" # http://stackoverflow.com/a/6191046
    gem "jekyll-assets"
    gem "autoprefixer-rails", "5.2.1.3" # https://github.com/ai/autoprefixer-rails/issues/81
    gem "uglifier"
    gem "jekyll-sitemap"
    gem "jekyll-twitter-plugin"
    gem "jekyll-archives"
    gem "algoliasearch"
end

I try to install it with bundle update jekyll and I get this error:

Fetching gem metadata from https://rubygems.org/..........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Resolving dependencies...
Bundler could not find compatible versions for gem "jekyll":
  In Gemfile:
    jekyll (>= 2.4) ruby

    jekyll-picture-tag (>= 0) ruby depends on
      jekyll (< 4) ruby

    jekyll-assets (>= 0) ruby depends on
      jekyll (~> 2.0) ruby

    jekyll (= 3.0.1) ruby

Is it really telling me that jekyll-assets desn't allow jekyll 3?

Sorry, I'm new to gems, bundle, etc.

[nhoizey]

Ok, when trying to also force v2.1.2 of jekyll assets, it seems the blocking dependency is fastimage, which is required at '~> 1.8', while blocked at '~> 1.6.4' by the picture tag plugin

I asked them if they can upgrade fastimage: https://github.com/robwierzbowski/jekyll-picture-tag/issues/71

But I will remove this plugin as soon as jekyll assets is able to deal with responsive images … ;-)

[envygeeks]

Closing this but /cc @envygeks (myself) because we will be forking jekyll-picture-tag into our source in 2.3 to offer responsive images (well we probably won't "fork" it but use it as a reference.)

[nhoizey]

Be careful if you use this other plugin as a reference, because it only supports the <picture> tag, which is the less useful: https://github.com/robwierzbowski/jekyll-picture-tag/issues/68