What is the difference between dagger and dagger 2.0?

Question

What is the difference between dagger and dagger 2.0 and why did Google decide to fork an existing project?

Answer 1

Some quotes from the presentation of Dagger 2

Dagger Questions 1:

• Ugly Generated Code
• Schedule Composition
• Ineffective charting
• Partial traceability
• Map Mapping API

Dagger Solutions 2:

• Checking the compilation time of the entire chart
• Easy debugging fully concrete call stack to provide and create
• Fully trackable
• API POJO
• Performance

Dagger 2 questions:

• Less flexible
• No dynamism
• Guice