Update to @openzeppelin/contracts-upgradeable from @openzeppelin/contracts

migrations/2_deploy_karma.js

@@ -1,10 +1,5 @@
-const { deployProxy } = require('@openzeppelin/truffle-upgrades');
-
 const Karma = artifacts.require('Karma');
 
 module.exports = async function (deployer) {
-    // initializer chooses function to call on initialization
-    // + initialize() defined in karma-ERC20.sol, marked as initializer
-    // https://docs.openzeppelin.com/upgrades-plugins/1.x/api-truffle-upgrades#deploy-proxy
-    await deployProxy(Karma, {deployer, initializer: 'initialize'});
-};
+    await deployer.deploy(Karma);
+};

migrations/3_deploy_proxy.js

@@ -0,0 +1,11 @@
+const Karma = artifacts.require('Karma');
+
+const { deployProxy } = require('@openzeppelin/truffle-upgrades');
+
+module.exports = async function (deployer) {
+    await deployProxy(
+        Karma,
+        ['Karma', 'KRMA', '1000000000000000000000000000'],
+        { deployer, initializer: 'initialize' }
+    );
+};

migrations/4_upgrade_karma.js

@@ -0,0 +1,9 @@
+const { upgradeProxy } = require('@openzeppelin/truffle-upgrades');
+
+const Karma = artifacts.require('Karma');
+const KarmaV2 = artifacts.require('KarmaV2');
+
+module.exports = async function (deployer) {
+    const existing = await Karma.deployed();
+    await upgradeProxy(existing.address, KarmaV2, { deployer });
+};