simplify migrate script

.env

@@ -1,4 +1,4 @@
 RPC_NODE_URI=http://127.0.0.1:8545
 RESET_SNAPSHOT_ID=0x2
 NETWORK_ID=5777
-GAS_PRICE=1
+GAS_PRICE=1

migrations/2_deploy.js

@@ -1,27 +1,11 @@
-const DecimalMath = artifacts.require("DecimalMath");
-const SafeERC20 = artifacts.require("SafeERC20");
-const DODOMath = artifacts.require("DODOMath");
-const DODO = artifacts.require("DODO");
 const DODOZoo = artifacts.require("DODOZoo");
 
 module.exports = async (deployer, network) => {
-  const deployDODO = async () => {
-    await deployer.deploy(DecimalMath);
-    await deployer.deploy(SafeERC20);
-    await deployer.deploy(DODOMath);
-
-    await deployer.link(SafeERC20, DODO);
-    await deployer.link(DecimalMath, DODO);
-    await deployer.link(DODOMath, DODO);
-
-    await deployer.deploy(DODO);
+  const deployDODOZoo = async () => {
     await deployer.deploy(DODOZoo);
   };
 
-  if (network == "production") {
-  } else if (network == "kovan") {
-  } else {
-    // for development & test
-    await deployDODO();
+  if (network == "development") {
+    await deployDODOZoo();
   }
 };

package.json

@@ -47,6 +47,7 @@
     "web3-eth-contract": "^1.2.8"
   },
   "devDependencies": {
+    "@truffle/hdwallet-provider": "^1.0.36",
     "ganache-cli": "^6.9.1",
     "prettier": "^2.0.5",
     "prettier-plugin-solidity": "^1.0.0-alpha.52",

truffle-config.js

@@ -58,31 +58,6 @@ module.exports = {
       gas: 0xfffffffffff,
       gasPrice: 1,
     },
-    // Another network with more advanced options...
-    // advanced: {
-    // port: 8777,             // Custom port
-    // network_id: 1342,       // Custom network
-    // gas: 8500000,           // Gas sent with each transaction (default: ~6700000)
-    // gasPrice: 20000000000,  // 20 gwei (in wei) (default: 100 gwei)
-    // from: <address>,        // Account to send txs from (default: accounts[0])
-    // websockets: true        // Enable EventEmitter interface for web3 (default: false)
-    // },
-    // Useful for deploying to a public network.
-    // NB: It's important to wrap the provider as a function.
-    // ropsten: {
-    // provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/YOUR-PROJECT-ID`),
-    // network_id: 3,       // Ropsten's id
-    // gas: 5500000,        // Ropsten has a lower block limit than mainnet
-    // confirmations: 2,    // # of confs to wait between deployments. (default: 0)
-    // timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
-    // skipDryRun: true     // Skip dry run before migrations? (default: false for public nets )
-    // },
-    // Useful for private networks
-    // private: {
-    // provider: () => new HDWalletProvider(mnemonic, `https://network.io`),
-    // network_id: 2111,   // This network is yours, in the cloud.
-    // production: true    // Treats this network as if it was a public net. (default: false)
-    // }
   },
 
   // Set default mocha options here, use special reporters etc.