hardhat.config.js use ganache as default network (example)

hardhat.config.js

/**  
* @type import('hardhat/config').HardhatUserConfig  
*/  
require('@nomiclabs/hardhat-ethers'); 
require('@openzeppelin/hardhat-upgrades');
module.exports = {
     defaultNetwork: "ganache",
     networks: {
         ganache: {
             url: "http://172.17.144.1:7545",
             // accounts: [privateKey1, privateKey2, ...]
         }
     },
     solidity: {
         version: "0.6.12",
     },
 };

nice one thanks.

I had to do:

npm install --save-dev ethers
npm install --save-dev @nomiclabs/hardhat-ethers
npm install --save-dev @openzeppelin/hardhat-upgrades

and then

npx hardhat console