How do I set read-only variables in BUILD?
Why not just make a private writer, like this
has 'foo' => (
is => 'ro',
isa => 'Something',
writer => '_set_foo',
lazy => 1,
build => '_build_foo',
);
Which is called first, BUILD or the attribute_builders?
The entire object instance is created and finalized before BUILD is called. When it gets to BUILD you can be sure you have a complete object (minus any non-initialized lazy attrs, etc).
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