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copied!<p>TL;DR - not really. You'll need to build one or both projects or get some help from the <code>jruby-rack</code> team by way of a release. See bottom for build steps.</p> <hr> <p>The current Trinidad versions (<a href="http://rubygems.org/gems/trinidad/versions/1.4.4" rel="nofollow">1.4.4</a> and 1.4.5B1 prerelease) use <code>jruby-rack</code> with optimistic versioning (<code>>= 1.1.10</code> and <code>>= 1.1.13</code>, respectively), so any dependency that satisfies this (say, 1.2.0) would take precedence without touching Trinidad.</p> <p>Unfortunately, because of how the JAR is packaged, a <code>git:</code> or <code>github:</code> dependency will not work. You would need to <a href="https://github.com/jruby/jruby-rack#building" rel="nofollow">build the gem</a> yourself. This is not too bad -- you really just need Maven beyond a working JDK/JRuby setup.</p> <p>Once <code>jruby-rack</code> is built/released with the changes, will be able to specify a workable version in your Gemfile (assuming it gets versioned 1.2.0):</p> <pre><code>gem 'jruby-rack', '~> 1.2.0' gem 'trinidad' </code></pre> <p>Maybe the <code>jruby-rack</code> team could backport this specific change to the 1.1.13 maintenance line and push a 1.1.13.2 release if it doesn't introduce incompatibility. Or they may be willing to do a prerelease from master.</p> <hr> <p>I haven't tested that things work properly for assets, but building and specifying the local version was relatively easy:</p> <pre><code># Assuming mvn is on the path, JRuby is active, and you # have gem install permissions: git clone https://github.com/jruby/jruby-rack.git cd jruby-rack bundle install bundle exec rake clean gem SKIP_SPECS=true gem install --local target/jruby-rack-1.2.0.SNAPSHOT.gem </code></pre> <p>After this, you can use <code>gem 'jruby-rack', '~> 1.2.0.SNAPSHOT'</code> in your Gemfile to satisfy Trinidad and test whether your problem is resolved.</p>

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