Which are the absolute must-have pallets that need to be added to a runtime to make it parachain-compatible?
I am looking at the parachain template.
Are the XCM helpers necessary?
2 Answers
The essential ones are:
- frame_system
- cumulus_pallet_parachain_system
- pallet_timestamp
- pallet_authorship
- pallet_collator_selection
- pallet_session
- pallet_aura
- cumulus_pallet_xcm: This pallet enables communication between your parachain and the Relay Chain using XCM. It is essential for parachain interoperability and cannot be removed.
You can make do with the other ones depending on your specific use-case by implementing custom pallets.
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Can
cumulus-pallet-aura-extbe skipped, as I see that it passes aConsensusHooktocumulus-pallet-parachain-systemandexecute_blockforvalidate_blockruntime function?– limeCommented Feb 22 at 7:51 -
Yes, you can delete it if you're using an alternative consensus mechanism like GRANDPA Commented Feb 26 at 15:15
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Thanks. Isn't
pallet-xcmnecessary as well? I see thatcumulus-pallet-xcmexpects an xcm executor.– limeCommented Feb 26 at 15:52
I found out that the must-have parachain pallets for parachain compatibility are:
cumulus_pallet_parachain_systemparachain_infocumulus_pallet_aura_ext(if you are usingpallet_aurafor consensus)
This does not include XCM message processing. In order to process XCM messages, you will need to import the necessary XCM pallets.