ruby-activerecord-3.2 depends on wrong version of ruby-arel and ruby-tzinfo

[Wladimir Mutel]

How to reproduce : install clean Trusty LTS,
then install ruby-rack1.4 to avoid conflicts with ruby-rack (see bug lp:1319367),
then install rails (2:3.2.13+1, component versions 3.2.16-1).
Then run 'rails new something' to create a new Rails project.
Then install : ruby-jquery-rails , ruby-coffee-rails , ruby-sqlite3 , ruby-sass-rails , ruby-uglifier so that 'rails new' can continue.
Then remove directory 'something' and run 'rails new something' again
On the step 'run bundle install --local' , get a message :

Resolving dependencies...
Could not find gem 'arel (~> 3.0.2) ruby', which is required by gem 'rails (= 3.2.16) ruby', in any of the sources.

Check ruby-arel version and find that it is 4.0.0-2. Go to http://packages.ubuntu.com/search?keywords=ruby-arel , pick ruby-arel 3.0.2-3 from Raring (13.04), download its .deb and install it manually.

Repeat: remove directory 'something' , run 'rails new something'. Get a message :

Could not find gem 'tzinfo (~> 0.3.29) ruby', which is required by gem 'rails (= 3.2.16) ruby', in any of the sources.

See that its version is 1.1.0-1 in Trusty. Go to http://packages.ubuntu.com/search?keywords=ruby-tzinfo , pick version 0.3.33-3 from Saucy (13.10), download&install it manually.

Repeat: 'rm -r something ; rails new something'. Now it finally completes normally. Just remember that you can't run 'safe-upgrade' on your system because new Trusty .debs will break gem dependencies again.

I would appreciate more care about having working Rails in Ubuntu 14.04. It's an LTS release after all.
I will repeat the same test case under Debian Wheezy and Debian Sid to give you a sample for comparison.
Probably some Debian Sid fixes should be integrated into Ubuntu LTS.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Thiago Martins (martinx)]

Same problem here... On Ubuntu Trusty, I have the following packages installed (using apt-get):

ruby-rails-3.2 3.2.16-1
ruby-arel 4.0.0

But, when I tried to fix those Ubuntu packages versions at my Gemfile, like this:

gem 'rails', '3.2.16'
gem 'arel', '4.0.0'

and run "bundle update", I'm getting the following error:

---
Bundler cloud not find compatible versions for gem "arel":
 In Gemfile:
    rails (= 3.2.16) ruby depends on
        arel (~> 3.0.2) ruby

    arel (4.0.0)
---

Apparently, Trusty isn't ready for production for RoR Applications "as-is".

-
 Thiago

[Thiago Martins (martinx)]

Hi!

I just backported `rails-3.2` from Utopic, to Trusty. Problem solved!

Now, I can use "Arel 4.0.0", from Trusty, with Rails 3.2.19 from Utopic (backported to Trusty).

Repository:

add-apt-repository ppa:martinx/ig

Cheers!
Thiago

[Wladimir Mutel (mwg)]

What about integrating these fixes into LTS 14.04 ?

[Ildar Nizamov (jedi-2b3)]

In directory /usr/share/rubygems-integration/1.9.1/specifications/find files contains string like '<arel>, ["~> 3.0.2"]' (just `grep '~> 3.0.2' /usr/share/rubygems-integration/1.9.1/specifications/*.gemspec`). In such strings change '~>' to '>='. Repeat for '<tzinfo>, ["~> 0.3.29]'. Now you can run `rails server` without that bug.