Paweł Stawicki wrote:
> shows error:
> undefined method `parent' for Rake::Task: installer:build:Rake::Task

I've seen this kind of error when I define a project with the same name 
than a default buildr task. So I guess buildr should give a meaningful 
error message.

IIRC buildr documentation mentions something about this, saying one 
should not name it's projects 'build' 'compile' 'test'.

Do you have something like?:

define 'installer' do
    # ...
    define 'build' do
      #...
    end
end

Could you try using different project names, if the problem continues, 
please provide an overview of your project structure or a fragment
from your buildfile.

kind regards
-- 
   vic