Chaos Labs CRV LT Reduction Aave V2 Ethereum

diffs/preAaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919_postAaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919.md

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+## Reserve changes
+
+### Reserves altered
+
+#### CRV ([0xD533a949740bb3306d119CC777fa900bA034cd52](https://etherscan.io/address/0xD533a949740bb3306d119CC777fa900bA034cd52))
+
+| description | value before | value after |
+| --- | --- | --- |
+| liquidationThreshold | 47 % | 45 % |
+
+
+## Raw diff
+
+```json
+{
+  "reserves": {
+    "0xD533a949740bb3306d119CC777fa900bA034cd52": {
+      "liquidationThreshold": {
+        "from": 4700,
+        "to": 4500
+      }
+    }
+  }
+}
+```

src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/AaveV2_CRVAaveV2EthereumLTReduction_20230919.s.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import {GovHelpers} from 'aave-helpers/GovHelpers.sol';
+import {EthereumScript} from 'aave-helpers/ScriptUtils.sol';
+import {AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919} from './AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919.sol';
+
+/**
+ * @dev Deploy AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919
+ * command: make deploy-ledger contract=src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/AaveV2_CRVAaveV2EthereumLTReduction_20230919.s.sol:DeployEthereum chain=mainnet
+ */
+contract DeployEthereum is EthereumScript {
+  function run() external broadcast {
+    new AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919();
+  }
+}
+
+/**
+ * @dev Create Proposal
+ * command: make deploy-ledger contract=src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/AaveV2_CRVAaveV2EthereumLTReduction_20230919.s.sol:CreateProposal chain=mainnet
+ */
+contract CreateProposal is EthereumScript {
+  function run() external broadcast {
+    GovHelpers.Payload[] memory payloads = new GovHelpers.Payload[](1);
+    payloads[0] = GovHelpers.buildMainnet(address(0x77CD8AC33C5cCdaE345C223BCbD0e2d45cb430aF));
+    GovHelpers.createProposal(
+      payloads,
+      GovHelpers.ipfsHashFile(
+        vm,
+        'src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/CRVAaveV2EthereumLTReduction.md'
+      )
+    );
+  }
+}

src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import {IProposalGenericExecutor} from 'aave-helpers/interfaces/IProposalGenericExecutor.sol';
+import {AaveV2Ethereum, AaveV2EthereumAssets} from 'aave-address-book/AaveV2Ethereum.sol';
+
+/**
+ * @title CRV Aave V2 Ethereum - LT Reduction
+ * @author @yonikesel - ChaosLabsInc
+ * - Snapshot: Direct to AIP
+ * - Discussion: https://governance.aave.com/t/arfc-crv-aave-v2-ethereum-lt-reduction-09-19-2023/14890
+ */
+contract AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919 is IProposalGenericExecutor {
+  uint256 public constant CRV_LIQUIDATION_THRESHOLD = 45_00; // 47 -> 45
+  uint256 public constant CRV_LTV = 0; // unchanged
+  uint256 public constant CRV_LIQUIDATION_BONUS = 10800; // unchanged
+
+  function execute() external {
+    AaveV2Ethereum.POOL_CONFIGURATOR.configureReserveAsCollateral(
+      AaveV2EthereumAssets.CRV_UNDERLYING,
+      CRV_LTV,
+      CRV_LIQUIDATION_THRESHOLD,
+      CRV_LIQUIDATION_BONUS
+    );
+  }
+}

src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919.t.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import 'forge-std/Test.sol';
+import {GovHelpers} from 'aave-helpers/GovHelpers.sol';
+import {AaveGovernanceV2} from 'aave-address-book/AaveGovernanceV2.sol';
+import {AaveV2Ethereum, AaveV2EthereumAssets} from 'aave-address-book/AaveV2Ethereum.sol';
+import {ProtocolV2TestBase, ReserveConfig} from 'aave-helpers/ProtocolV2TestBase.sol';
+import {AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919} from './AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919.sol';
+
+/**
+ * @dev Test for AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919
+ * command: make test-contract filter=AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919
+ */
+contract AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919_Test is ProtocolV2TestBase {
+  AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919 internal proposal;
+
+  uint256 public constant CRV_LIQUIDATION_THRESHOLD = 45_00; // 45%
+
+  function setUp() public {
+    vm.createSelectFork(vm.rpcUrl('mainnet'), 18168802);
+    proposal = new AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919();
+  }
+
+  function testProposalExecution() public {
+    ReserveConfig[] memory allConfigsBefore = createConfigurationSnapshot(
+      'preAaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919',
+      AaveV2Ethereum.POOL
+    );
+
+    GovHelpers.executePayload(vm, address(proposal), AaveGovernanceV2.SHORT_EXECUTOR);
+
+    ReserveConfig[] memory allConfigsAfter = createConfigurationSnapshot(
+      'postAaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919',
+      AaveV2Ethereum.POOL
+    );
+
+    ReserveConfig memory CRV_UNDERLYING_CONFIG = _findReserveConfig(
+      allConfigsBefore,
+      AaveV2EthereumAssets.CRV_UNDERLYING
+    );
+    CRV_UNDERLYING_CONFIG.liquidationThreshold = CRV_LIQUIDATION_THRESHOLD;
+    _validateReserveConfig(CRV_UNDERLYING_CONFIG, allConfigsAfter);
+
+    diffReports(
+      'preAaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919',
+      'postAaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919'
+    );
+
+    e2eTest(AaveV2Ethereum.POOL);
+  }
+}

src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/CRVAaveV2EthereumLTReduction.md

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+---
+title: "CRV Aave V2 Ethereum LT Reduction"
+author: "Chaos Labs"
+discussions: "https://governance.aave.com/t/arfc-crv-aave-v2-ethereum-lt-reduction-09-19-2023/14890"
+---
+
+## Simple Summary
+
+A proposal to reduce Liquidation Threshold (LT) for CRV on Aave V2 Ethereum.
+
+## Motivation
+
+Following the **[CRV V2 Ethereum Deprecation Plan](https://governance.aave.com/t/arfc-chaos-labs-crv-v2-ethereum-deprecation-plan/14364)** approved by the community and given the current market conditions and protocol usage, Chaos Labs and Gauntlet aligned on a 2% LT reduction.
+
+The individual analyses and considerations can be found in the forum [discussion](https://governance.aave.com/t/arfc-crv-aave-v2-ethereum-lt-reduction-09-19-2023/14890).
+
+## Specification
+
+| Asset | Parameter | Current Value | Recommendation | Change |
+| ----- | --------- | ------------- | -------------- | ------ |
+| CRV   | LT        | 47            | 45             | -2%    |
+
+## References
+
+- Implementation: [Ethereum](https://github.com/bgd-labs/aave-proposals/blob/main/src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919.sol)
+- Tests: [Ethereum](https://github.com/bgd-labs/aave-proposals/blob/main/src/20230919_AaveV2_Eth_CRVAaveV2EthereumLTReduction/AaveV2_Ethereum_CRVAaveV2EthereumLTReduction_20230919.t.sol)
+- [Snapshot](Direct to AIP)
+- [Discussion](https://governance.aave.com/t/arfc-crv-aave-v2-ethereum-lt-reduction-09-19-2023/14890)
+
+## Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).