def replace_gem(specs)
executables = specs.map { |s| s.executables }.flatten
::Kernel.send(:define_method, :gem) do |dep, *reqs|
if executables.include? File.basename(caller.first.split(':').first)
return
end
reqs.pop if reqs.last.is_a?(Hash)
unless dep.respond_to?(:name) && dep.respond_to?(:requirement)
dep = Gem::Dependency.new(dep, reqs)
end
spec = specs.find { |s| s.name == dep.name }
if spec.nil?
e = Gem::LoadError.new "#{dep.name} is not part of the bundle. Add it to Gemfile."
e.name = dep.name
if e.respond_to?(:requirement=)
e.requirement = dep.requirement
else
e.version_requirement = dep.requirement
end
raise e
elsif dep !~ spec
e = Gem::LoadError.new "can't activate #{dep}, already activated #{spec.full_name}. " \
"Make sure all dependencies are added to Gemfile."
e.name = dep.name
if e.respond_to?(:requirement=)
e.requirement = dep.requirement
else
e.version_requirement = dep.requirement
end
raise e
end
true
end
end