Error installing Rails on Ubuntu 11.10 (Gem::DependencyError)

rubyonrails-talk
1

I'm trying to install Ruby on Rails on Ubuntu 11.10, but receiving this error:

    $ sudo gem install rails     ERROR: While executing gem ... (Gem::DependencyError)         Unable to resolve dependencies: rails requires activesupport (= 3.2.3), actionpack (= 3.2.3), activerecord (= 3.2.3), activeresource (= 3.2.3), actionmailer (= 3.2.3), railties (= 3.2.3)

How can I fix this?

Note: Git (1.7.5.4 ) and Ruby (1.9.2p290) are installed properly.

2

How did you installed Ruby? Do you have an updated rubygems?

3

gem update --system

4

Actually, that might not work on a Debian based distro if rubygems has been installed via apt packages. That's why I asked how Ruby was installed.

5

I strongly advise that you use rvm to install ruby and rails (I am assuming that you are not using rvm as you have used sudo on gem install).

Colin

6

Hi,

Colin is right, using RVM has lots of advantages! You can have multiple Rubies and Gem versions, Gemsets for projects, etc. Highly recommend because without it you're gonna have a tone of Gem version problems later.

We made a 1 line script for Ubuntu which installs Wayne's RVM, with RVM installs a Ruby version 1.9.2 then creates a Gemset which installs Rails3.2. Just updated it for you! :slight_smile: Would be great if you'd give a try. Report me back how it worked please, I'd like to publish it.

https://github.com/YogiZoli/RVMinstallerForUbuntu

Welcome on Rails! YogiZoli