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Other than the big Infura + Ganache integration feature mentioned above, we've also added a couple of smaller features that we hope will improve the development experience.

Integrate Infura into Ganache forking
Add a wallet.passphrase Option
Add evm_addAccount/evm_removeAccount RPC Methods
Add support for the "arrowGlacier" hardfork

Integrate Infura into Ganache forking (#1513)

This is a big deal! You now have free access to Infura²'s archive data for Ethereum's Mainnet, Ropsten, Kovan, Rinkeby, and Görli networks built right into Ganache itself!

The command ganache --fork will fork Ethereum's Mainnet at the latest block number with access to full archive data.

We currently don't impose restrictions outside of the default limits provided by Infura, but will monitor usage closely in order to limit abuse so we can continue to provide this resource to you for free.

You can also fork from Ropsten, Kovan, Rinkeby, and Görli:

$ ganache --fork ropsten
$ ganache --fork kovan
$ ganache --fork rinkeby
$ ganache --fork görli
$ ganache --fork goerli

If you prefer using Ganache's option namespaces you can use:

$ ganache --fork.network mainnet
$ ganache --fork.network ropsten
$ ganache --fork.network kovan
$ ganache --fork.network rinkeby
$ ganache --fork.network görli
$ ganache --fork.network goerli

You can also use this feature programmatically:

import Ganache from "ganache";

const server = Ganache.server({
  fork: {
    network: "mainnet"
  }
});
server.listen(8545, () => {
  const liveOptions = provider.getOptions();

  console.log("forked network: " + liveOptions.fork.network);
  console.log("forked at block: " + liveOptions.fork.blockNumber.toString());
  console.log("listening on 8545");
});

This feature is made possible by our close relationship with Infura.

Please let us know if you have problems, questions, or suggestions!

Add a `wallet.passphrase` Option (#1513)

This feature allows you to specify a passphrase that will be used for personal namespace commands (personal_unlockAccount, personal_sendTransaction, etc.) on all startup accounts. Before this feature, "" was the default (and only) password for startup accounts.

NOTE: Specifying the wallet.passphrase parameter does not lock accounts by default. The wallet.lock (previously wallet.secure) parameter can be used to lock accounts by default. If wallet.passphrase parameter is used without wallet.lock, the passphrase will still be used when personal_lockAccount is used.

Add `evm_addAccount`/`evm_removeAccount` RPC Methods (#1513)

The evm_addAccount method can be used to add any address to the personal namespace. Ganache will create a fake private key which will then used for all personal namespace commands sent using that added address. Here's an example of how to use this:

const address = "0x0000000000000000000000000000000000000000"; // let's send transactions from the zero address!
const transaction = {from: address};
const passphrase = "this is my passphrase";
// this will fail because we don't "know" the zero address
await assert.rejects(provider.send("personal_sendTransaction", [{ from: address }, passphrase] ));

const added = await provider.send("evm_addAccount", [address, passphrase] );
assert.equal(added, true) // but now we do!

// so now we can send transactions from the zero address!
const txHash = await provider.send("personal_sendTransaction", [{ from: address }, passphrase] ))

The evm_removeAccount method can be used to do just the opposite — it will remove an account from the personal namespace.

Add support for the "arrowGlacier" hardfork (#1524)

We updated ethereumjs-vm, and related packages, add added support for the "arrowGlacier" hardfork which is set to activate at block number 13,773,000 which is predicted to occur on December 8, 2021.

This hardfork introduces a single change: it pushes the difficulty bomb back several months. This doesn't affect Ganache, other than accepting the hardfork name in our options.

We've replaced some previous alpha features and errors (#1513)

In the ganache@v7.0.0-alpha.0 release, we introduced the evm_unlockUnknownAccount and evm_lockUnknownAccount RPC methods, and we since realized that these could be made simpler to use with a few tweaks. So, the breaking part of this change is that these methods have been removed. The good news is that they've been replaced with evm_addAccount and evm_removeAccount, which is explained in more detail in the features section of these notes.

We've also updated some error messaging to encourage the use of passphrases over passwords. So, the original error signer account is locked error changed to authentication needed: password or unlock in ganache@v7.0.0-alpha.0 and has (hopefully!) finally settled on authentication needed: passphrase or unlock in the beta. We doubt this will actually break anything for our users, but we thought we'd mention it just in case.

We've got a handful of fixes in the release, some big (like making forking "chainId-aware"), some small. Thanks again to users who opened issued or provided feedback on these issues!

Fix account locking/unlocking
Make web3_sha encode data correctly
Make the quiet flag actually work
Make forking chainId aware
Fix Blake2-256 calculation
Remove bigint's n from cli output
Return error for eth_call when call errors

Fix account locking/unlocking (#1513)

Starting up Ganache creates a set of accounts and saves their private/public keys to an encrypted¹ keyfile, or so we thought. It turns out that there were some cases where the keyfile wasn't properly initialized. So, when an account was locked via personal_lockAccount, it was removed from our whitelist of "unlocked" accounts, never to be found again. When an attempt to unlock the account via personal_unlockAccount would then be made, the private key for the account wouldn't be found and the unlock would fail.

Now, we properly store accounts in the keyfile, so all accounts in the personal namespace can be locked and unlocked.

Make web3_sha encode data correctly (#1593)

We were previously treating the data as utf-8 instead of hex.

Now we do things the right way.

Make the quiet flag actually work (#1587)

The command ganache --quite wasn't making Ganache be quiet.

Now it does.

Make forking chainId aware (#1537)

Previous versions of Ganache applied the local hardfork rules to eth_call and debug_traceTransaction calls run in the context of a block that should be executed under different hardfork rules.

This bug may have caused results to be incorrect in cases where new opcodes were added, gas costs changed, or new transaction types added in hardforks.

This fix makes the assumption that the result of a call to eth_chainId will accurately identify the chain (Mainnet = 1, Görli = 5, etc).

Fix Blake2-256 calculation (#1524)

There was a bug in @ethereumjs/vm package - blake2-256 precompile (see EIP-152) was implemented incorrectly. This was fixed in a newer version and we've upgraded the package in this release.

Remove bigint's n from cli output (#1591)

Startup display on Ganache 7.0.0-alpha.2 included an "n" after some numbers. This release properly prints the numbers without the n suffix.

Return error for eth_call when call errors (#1589)

We incorrectly were requiring the use of our vmErrorsOnRPCResponse flag in order to return eth_call revert messages and errors.

eth_call is not behaving as it should in alpha version (#1547)
asyncRequestProcessing doesn't default to true like it is supposed to (#1532)
Our TypeScript types aren't properly exported (#1412)
We don't return a proper pending block (#772)
Forking doesn't work in the browser
Uncles aren't fully supported when forking
Forking may fail in weird and unexpected ways. We need to "error better" here
Node.js v12 outputs a µWS warning in the console
Node.js v12 doesn't handle memory as well as 14+ and may crash computing very large debug_traceTransaction results
Our bundle size is larger than ideal

Forking support for EVM compatible chains Arbitrum Rollup, Optimistic Ethereum, and Polygon PoS!
Support for enabling eligible draft EIPs before they are finalized or considered for inclusion in a hardfork.
New hardfork support well in advance of the hardfork launch.
Add an eth_createAccessList method.
Track test performance metrics over time.
Track real world Ganache usage (opt-in and anonymized) to better tune performance and drive bug fixes and feature development.
Track test coverage.
Document how to use Ganache in the browser, and what limits it has.
evm_mine will return the new blocks instead of just 0x0.
We've laid the groundwork for additional performance improvements. We expect to see an additional 2-5x speed up for typical testing work loads in the near future.
Add new evm_setCode and evm_setStorageAt RPC methods.
Make evm_snapshot ids globally unique (unpredictable instead of a counter).
Support eth_getRawTransactionByHash RPC method.
Support debug_accountAt RPC method.
Allow "mining" to be disabled on start up.
Set CLI options via config file, package.json, or ENV vars.
"Flavor" Plugins: We're building support for Layer 2 plugins into Ganache so we can start up and manage other chains. e.g., The ganache filecoin command will look for the @ganache/filecoin package and start up a Filecoin and IPFS server.
Multi-chain configurations: you'll be able to start up your project's entire blockchain "ecosystem" from a single Ganache command: e.g., ganache --flavor ethereum --flavor filecoin --flavor optimism.
- this is where defining your CLI options via JSON config will come in very handy!
Create a CLI interactive/RELP mode.
Enable a CLI daemon mode.

Open new issues (or join our team) to influence what we gets implemented and prioritized.