simple-builder 0.0.2

A procedural macro for creating a builder-pattern struct for any struct.
Documentation 
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error: proc-macro derive panicked
 --> tests/ui/no_required_attribute.rs:3:10
  |
3 | #[derive(Builder)]
  |          ^^^^^^^
  |
  = help: message: Struct fields must be of type Option<...>, or have #[builder(required)] attribute.