migration: unlock/unreserve Gov v1 balances and remove kvs (#7314)

* restore old gov configs

* migrate old gov v1 storage

* exclude the Call enum for gov v1 pallets

* update substrate

* update tips pallet

* update chain_spec

* fix migrations tuple

* oliver comments

* format comment

* ".git/.scripts/commands/fmt/fmt.sh"

* comments

* polkadot migrations

* fix cargo.lock

* fix compilation

* use democracy standalone migration

* re-remove gov v1 pallets from kusama

* remove unnecessary feature

* fix unlock configs

* use substrate master

* reset cargo.lock

* cargo update -p sp-io

* remove from chainspec

* remove polkadot gov v1 pallets

* clean up chain spec

* cargo fmt

* remove old gov import

---------

Co-authored-by: command-bot <>

polkadot/runtime/kusama/src/lib.rs

@@ -1533,6 +1533,51 @@ pub type Migrations = (migrations::Unreleased,);
 #[allow(deprecated, missing_docs)]
 pub mod migrations {
 	use super::*;
+	use frame_support::traits::LockIdentifier;
+	use frame_system::pallet_prelude::BlockNumberFor;
+
+	parameter_types! {
+		pub const DemocracyPalletName: &'static str = "Democracy";
+		pub const CouncilPalletName: &'static str = "Council";
+		pub const TechnicalCommitteePalletName: &'static str = "TechnicalCommittee";
+		pub const PhragmenElectionPalletName: &'static str = "PhragmenElection";
+		pub const TechnicalMembershipPalletName: &'static str = "TechnicalMembership";
+		pub const TipsPalletName: &'static str = "Tips";
+		pub const PhragmenElectionPalletId: LockIdentifier = *b"phrelect";
+	}
+
+	// Special Config for Gov V1 pallets, allowing us to run migrations for them without
+	// implementing their configs on [`Runtime`].
+	pub struct UnlockConfig;
+	impl pallet_democracy::migrations::unlock_and_unreserve_all_funds::UnlockConfig for UnlockConfig {
+		type Currency = Balances;
+		type MaxVotes = ConstU32<100>;
+		type MaxDeposits = ConstU32<100>;
+		type AccountId = AccountId;
+		type BlockNumber = BlockNumberFor<Runtime>;
+		type DbWeight = <Runtime as frame_system::Config>::DbWeight;
+		type PalletName = DemocracyPalletName;
+	}
+	impl pallet_elections_phragmen::migrations::unlock_and_unreserve_all_funds::UnlockConfig
+		for UnlockConfig
+	{
+		type Currency = Balances;
+		type MaxVotesPerVoter = ConstU32<16>;
+		type PalletId = PhragmenElectionPalletId;
+		type AccountId = AccountId;
+		type DbWeight = <Runtime as frame_system::Config>::DbWeight;
+		type PalletName = PhragmenElectionPalletName;
+	}
+	impl pallet_tips::migrations::unreserve_deposits::UnlockConfig<()> for UnlockConfig {
+		type Currency = Balances;
+		type Hash = Hash;
+		type DataDepositPerByte = DataDepositPerByte;
+		type TipReportDepositBase = TipReportDepositBase;
+		type AccountId = AccountId;
+		type BlockNumber = BlockNumberFor<Runtime>;
+		type DbWeight = <Runtime as frame_system::Config>::DbWeight;
+		type PalletName = TipsPalletName;
+	}
 
 	/// Unreleased migrations. Add new ones here:
 	pub type Unreleased = (
@@ -1546,6 +1591,21 @@ pub mod migrations {
 		parachains_configuration::migration::v7::MigrateToV7<Runtime>,
 		parachains_scheduler::migration::v1::MigrateToV1<Runtime>,
 		parachains_configuration::migration::v8::MigrateToV8<Runtime>,
+
+		// Unlock/unreserve balances from Gov v1 pallets that hold them
+		// https://github.com/paritytech/polkadot/issues/6749
+		pallet_elections_phragmen::migrations::unlock_and_unreserve_all_funds::UnlockAndUnreserveAllFunds<UnlockConfig>,
+		pallet_democracy::migrations::unlock_and_unreserve_all_funds::UnlockAndUnreserveAllFunds<UnlockConfig>,
+		pallet_tips::migrations::unreserve_deposits::UnreserveDeposits<UnlockConfig, ()>,
+
+		// Delete storage key/values from all Gov v1 pallets
+		frame_support::migrations::RemovePallet<DemocracyPalletName, <Runtime as frame_system::Config>::DbWeight>,
+		frame_support::migrations::RemovePallet<CouncilPalletName, <Runtime as frame_system::Config>::DbWeight>,
+		frame_support::migrations::RemovePallet<TechnicalCommitteePalletName, <Runtime as frame_system::Config>::DbWeight>,
+		frame_support::migrations::RemovePallet<PhragmenElectionPalletName, <Runtime as frame_system::Config>::DbWeight>,
+		frame_support::migrations::RemovePallet<TechnicalMembershipPalletName, <Runtime as frame_system::Config>::DbWeight>,
+		frame_support::migrations::RemovePallet<TipsPalletName, <Runtime as frame_system::Config>::DbWeight>,
+
 	);
 }