Installing gems tries to load the gems in my custom rake tasks before installing it

Question

I'm developing an application using rails 2.3.5, gitorious and deploy with vlad, the OS is Linux Mint 9 Isadora.
vlad:setup and vlad:update are ok. But when I vlad:migrate and have the same error than if I ssh on the server and try a rake gems:install

rake aborted!
no such file to load -- ya2yaml
/var/www/path/to/releases/20100622030150/Rakefile:10 (See full trace by running task with --trace)

My config/environment.rb is good:

RAILS_GEM_VERSION = '2.3.5' unless defined? RAILS_GEM_VERSION  
# Bootstrap the Rails environment, frameworks, and default configuration  
require File.join(File.dirname(__FILE__), 'boot')  
Rails::Initializer.run do |config|  
  config.gem "haml"

I have a custom task in lib/tasks/db_fixtures.rake that requires ya2yaml:

namespace :export do
desc 'Create YAML test fixtures from data in an existing database.
Defaults to development database.  Set RAILS_ENV to override.'
require 'rubygems'
require 'ya2yaml'
task :fixtures => [:environment] do

When I rename this file it is not loaded by rake and I don't have the error anymore when I rake gems:install

So my guess is that it looks like rake gems:install tries to load the libs in my custom tasks before installing the gems for some reason and throw me an error.

What would be a solution?
Thanks,

Answer 1

this might work? delay the requires on your rake task by moving them into the task itself

task :fixtures => [:environment] do
    require 'rubygems'
    require 'ya2yaml'
    # ...

by default running rake tasks 'loads' all of the rake files