NQP-rx versus older Parrot compiler tools

• Older tools:
• Parser: PGE
• Action methods: NQP
• Compiler object: PIR
• HLL libraries: PIR + sometimes NQP

• New environment:
• Parser: NQP
• Action methods: NQP
• Compiler object: NQP
• HLL libraries: NQP + sometimes PIR

→ Now, compiler can be written with a single tool