As noted on the previous post, I’m sticking with Ruby 1.8.5 fo QA Sites until I get a convincing argument to upgrade manually — meaning a custom compile.  I should really learn how to build RPMs.
Ruby 1.8.5-5.el5_2.3

official CentOS 5 rpm:

yum install ruby ruby-devel ruby-irb ruby-ri ruby-libs ruby-docs ruby-rdoc

RubyGems 1.1.1

manual install:

wget http://rubyforge.org/frs/download.php/35283/rubygems-1.1.1.tgz

tar -xvzf rubygems-1.1.1.tgz

cd rubygems-1.1.1

ruby setup.rb

Rails 2.0.2

gem install rails -v=2.0.2 

Rake 0.8.1

installed with Rails

Rspec 1.1.4

gem install rspec

ZenTest 3.10.0

gem install ZenTest

test-unit 2.0.2

gem install test-unit

Capistrano 2.4.3

gem install capistrano

MySQL 5.0

database version 5.0.45-7.el5*:

yum install mysql mysql-devel mysql-server


ruby mysql drivers version 2.7:

gem install mysql — –with-mysql-lib=/usr/lib/mysql/ –with-myse=/usr/include/mysql/

PostgreSQL 8.1

database version 8.1.11-1.el5_1.1:

yum install postgresql postgresql-devel postgresql-server postgresql-libs
ruby drivers 0.7.9.2008.03.18:

gem install pg

I had trouble installing databases drivers on Windows
using the older postgres drivers helped, but I think I had to specify the directory:

gem install postgres

SQLite 3.6.1

yum install sqlite sqlite-devel (3.3.6-2)
gem install sqlite3-ruby
Windows needs the SQLite dll as well as the exe.  They require to both be in the PATH environment variable.

# gem list –local
*** LOCAL GEMS ***
actionmailer (2.0.2)

actionpack (2.0.2)

activerecord (2.0.2)

activeresource (2.0.2)

activesupport (2.0.2)

hoe (1.7.0)

mysql (2.7)

pg (0.7.9.2008.03.18)

rails (2.0.2)

rake (0.8.1)

rspec (1.1.4)

rubyforge (1.0.0)

sqlite3-ruby (1.2.2)

test-unit (2.0.0)

ZenTest (3.10.0)