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This was meant to support:
env do |req|
append_path 'PATH', req.some_method
...
end
i.e., the block was evaluated in the context of ENV. But it turned out
to be not so useful after all, so I'm ripping it out before something
actually depends on it.
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Not thread safe! But I don't think we care.
We want to evaluate the env DSL block in the context of ENV for asthetic
reasons, but we also want access to methods on the requirement instance.
We can use #instance_exec to pass the requirement itself into the block:
class Foo < Requirement
env do |req|
append 'PATH', req.some_path
end
def some_path
which 'something'
end
end
Also add a simplified version of Object#instance_exec for Ruby 1.8.6.
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In addition to
env :userpaths
env :std
requirements can now do
env do
append 'PATH', '/some/path/to/bin'
# and more
end
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Closes #14654.
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