chore: update solidity version

contracts/Hasher.sol

@@ -1,5 +1,5 @@
 //SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.0;
+pragma solidity ^0.8.4;
 
 import {PoseidonT3, PoseidonT6} from "./Poseidon.sol";
 import { SnarkConstants } from "./SnarkConstants.sol";

contracts/IncrementalMerkleTree.sol

@@ -1,5 +1,5 @@
 //SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.0;
+pragma solidity ^0.8.4;
 
 import { SnarkConstants } from "./SnarkConstants.sol";
 import { Hasher } from "./Hasher.sol";

contracts/Ownable.sol

@@ -1,5 +1,5 @@
 //SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.0;
+pragma solidity ^0.8.4;
 
 contract Ownable {
     address private _owner;

contracts/Poseidon.sol

@@ -1,5 +1,5 @@
 //SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.0;
+pragma solidity ^0.8.4;
 
 library PoseidonT3 {
     function poseidon(uint256[2] memory input) public pure returns (uint256) {}

contracts/Semaphore.sol

@@ -1,5 +1,5 @@
 //SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.0;
+pragma solidity ^0.8.4;
 
 import "./Verifier.sol";
 import { IncrementalQuinTree } from "./IncrementalMerkleTree.sol";

contracts/SemaphoreClient.sol

@@ -1,5 +1,5 @@
 //SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.0;
+pragma solidity ^0.8.4;
 
 import { Semaphore } from './Semaphore.sol';
 

contracts/SnarkConstants.sol

@@ -1,5 +1,5 @@
 //SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.0;
+pragma solidity ^0.8.4;
 
 
 contract SnarkConstants {

hardhat.config.ts

@@ -6,15 +6,8 @@ import "@nomiclabs/hardhat-ethers"
 import "hardhat-deploy"
 
 const hardhatConfig: HardhatUserConfig = {
-    solidity: {
-        version: "0.8.4",
-        settings: {
-            optimizer: {
-                enabled: true,
-                runs: 200
-            }
-        }
-    },
+    solidity: config.solidity,
+    paths: config.paths,
     networks: {
         hardhat: {
             chainId: 1337,
@@ -27,8 +20,7 @@ const hardhatConfig: HardhatUserConfig = {
     },
     namedAccounts: {
         deployer: 0
-    },
-    paths: config.paths
+    }
 }
 
 export default hardhatConfig

package.json

@@ -26,8 +26,7 @@
         "compile:circuits": "ts-node scripts/compile-circuits.ts",
         "deploy:localhost": "hardhat deploy --tags complete",
         "export:localhost": "mkdir -p exports && hardhat --network localhost export --export exports/localhost.json",
-        "test": "hardhat test",
-        "test:fullProof": "yarn compile:circuits && yarn test"
+        "test": "hardhat test"
     },
     "devDependencies": {
         "@nomiclabs/hardhat-ethers": "^2.0.4",
@@ -52,6 +51,9 @@
         "typescript": "^4.5.5"
     },
     "config": {
+        "solidity": {
+            "version": "0.8.4"
+        },
         "paths": {
             "contracts": "./contracts",
             "circuit": "./circuit",

scripts/compile-circuits.ts

@@ -20,6 +20,7 @@ async function exec(command: string) {
 
 async function main() {
     const buildPath = config.paths.build.snark
+    const solidityVersion = config.solidity.version
 
     if (!fs.existsSync(buildPath)) {
         fs.mkdirSync(buildPath, { recursive: true })
@@ -59,7 +60,7 @@ async function main() {
         { groth16: fs.readFileSync("./node_modules/snarkjs/templates/verifier_groth16.sol.ejs", "utf8") },
         logger
     )
-    verifierCode = verifierCode.replace(/pragma solidity \^\d+\.\d+\.\d+/, "pragma solidity ^0.8.0")
+    verifierCode = verifierCode.replace(/pragma solidity \^\d+\.\d+\.\d+/, `pragma solidity ^${solidityVersion}`)
 
     fs.writeFileSync(`${buildPath}/verification_key.json`, JSON.stringify(verificationKey), "utf-8")
     fs.writeFileSync(`${config.paths.contracts}/Verifier.sol`, verifierCode, "utf-8")