Can't install guard gem for ruby 2.2.2.

[Antti]

Steps to reproduce:

gem uninstall listen -a  #confirm uninstall
gem install guard

It fails with:

ERROR:  Error installing guard:
    ruby_dep requires Ruby version >= 2.2.3, ~> 2.2.

ruby_dep is a dependency for listen gem, and doesn't support ruby < 2.2.3

[e2]

I'm on my phone, so search for related issues in the issue tracker if you
want more info. Basically, Ruby 2.2.3 (and earlier) have serious security
vulnerabilities. (see ruby-lang.org and search the archives). So do
whatever is in your power to upgrade your Ruby. It's the best action
possible.
On May 4, 2016 4:33 PM, "Andrii Dmytrenko" notifications@github.com wrote:

Steps to reproduce:

gem uninstall listen -a #confirm uninstall
gem install guard

It fails with:

ERROR: Error installing guard:
ruby_dep requires Ruby version >= 2.2.3, ~> 2.2.

ruby_dep is a dependency for listen gem, and doesn't support ruby < 2.2.3

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#832

[westonganger]

The last version that works is 3.1.1, so force that version of listen In the meantime:

# Gemfile

gem 'listen', '3.1.1'

[e2]

Thanks, @westonganger !

@Antti - For more information about what's supported, why and what other options are available: https://github.com/guard/listen/wiki/Support-for-older-versions-of-Ruby

[e2]

@Antti - in this case specifically, Listen has the same Ruby requirement, only ruby_dep is being attempted to install first.

See Ruby requirement here: https://rubygems.org/gems/listen

Technically, ruby_dep is used so that Listen can manage it's dependencies.

I marked this as "wontfix", because I don't have a compelling use case to make ruby_dep work on Ruby < 2.2.3 yet. Check out the ruby_dep README if you want to change that there: https://github.com/e2/ruby_dep#rubydep

But, even if I relax RubyDep's dependency on Ruby >= 2.2.3, Listen will still have it's own dependency, which is exactly the same.

This means I'd need a compelling use case to support Ruby < 2.2.3, and I don't have one yet. Especially for a "development tool" like Guard you'll want it working on the newer Ruby.

If you have such a case, open a new issue so I can address "just" your case specifically.

Thank you for opening the issue though!