Change --testnet flag to --network (#1751)

## Issue Addressed

- Resolves #1689

## Proposed Changes

TBC

## Additional Info

NA

account_manager/src/validator/create.rs

@@ -52,7 +52,7 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
             Arg::with_name(WALLETS_DIR_FLAG)
                 .long(WALLETS_DIR_FLAG)
                 .value_name(WALLETS_DIR_FLAG)
-                .help("A path containing Eth2 EIP-2386 wallets. Defaults to ~/.lighthouse/{testnet}/wallets")
+                .help("A path containing Eth2 EIP-2386 wallets. Defaults to ~/.lighthouse/{network}/wallets")
                 .takes_value(true)
                 .conflicts_with("datadir"),
         )
@@ -62,7 +62,7 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
                 .value_name("SECRETS_DIR")
                 .help(
                     "The path where the validator keystore passwords will be stored. \
-                    Defaults to ~/.lighthouse/{testnet}/secrets",
+                    Defaults to ~/.lighthouse/{network}/secrets",
                 )
                 .conflicts_with("datadir")
                 .takes_value(true),

account_manager/src/validator/mod.rs

@@ -23,7 +23,7 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
                 .value_name("VALIDATOR_DIRECTORY")
                 .help(
                     "The path to search for validator directories. \
-                    Defaults to ~/.lighthouse/{testnet}/validators",
+                    Defaults to ~/.lighthouse/{network}/validators",
                 )
                 .takes_value(true)
                 .conflicts_with("datadir"),

account_manager/src/validator/recover.rs

@@ -56,7 +56,7 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
                 .value_name("SECRETS_DIR")
                 .help(
                     "The path where the validator keystore passwords will be stored. \
-                    Defaults to ~/.lighthouse/{testnet}/secrets",
+                    Defaults to ~/.lighthouse/{network}/secrets",
                 )
                 .takes_value(true),
         )

account_manager/src/wallet/mod.rs

@@ -16,7 +16,7 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
             Arg::with_name(WALLETS_DIR_FLAG)
                 .long(WALLETS_DIR_FLAG)
                 .value_name("WALLETS_DIRECTORY")
-                .help("A path containing Eth2 EIP-2386 wallets. Defaults to ~/.lighthouse/{testnet}/wallets")
+                .help("A path containing Eth2 EIP-2386 wallets. Defaults to ~/.lighthouse/{network}/wallets")
                 .takes_value(true)
                 .conflicts_with("datadir"),
         )

beacon_node/src/config.rs

@@ -258,13 +258,7 @@ pub fn get_config<E: EthSpec>(
      */
     let eth2_testnet_config = get_eth2_testnet_config(&cli_args)?;
 
-    client_config.eth1.deposit_contract_address =
+    client_config.eth1.deposit_contract_address = format!("{:?}", spec.deposit_contract_address);
-        format!("{:?}", eth2_testnet_config.deposit_contract_address()?);
-    let spec_contract_address = format!("{:?}", spec.deposit_contract_address);
-    if client_config.eth1.deposit_contract_address != spec_contract_address {
-        return Err("Testnet contract address does not match spec".into());
-    }
-
     client_config.eth1.deposit_contract_deploy_block =
         eth2_testnet_config.deposit_contract_deploy_block;
     client_config.eth1.lowest_cached_block_number =
@@ -274,6 +268,13 @@ pub fn get_config<E: EthSpec>(
     client_config.eth1.chain_id = spec.deposit_chain_id.into();
     client_config.eth1.set_block_cache_truncation::<E>(spec);
 
+    info!(
+        log,
+        "Deposit contract";
+        "deploy_block" => client_config.eth1.deposit_contract_deploy_block,
+        "address" => &client_config.eth1.deposit_contract_address
+    );
+
     if let Some(mut boot_nodes) = eth2_testnet_config.boot_enr {
         client_config.network.boot_nodes_enr.append(&mut boot_nodes)
     }
@@ -593,15 +594,17 @@ pub fn get_data_dir(cli_args: &ArgMatches) -> PathBuf {
         .unwrap_or_else(|| PathBuf::from("."))
 }
 
-/// Try to parse the eth2 testnet config from the `testnet`, `testnet-dir` flags in that order.
+/// Try to parse the eth2 testnet config from the `network`, `testnet-dir` flags in that order.
 /// Returns the default hardcoded testnet if neither flags are set.
 pub fn get_eth2_testnet_config(cli_args: &ArgMatches) -> Result<Eth2TestnetConfig, String> {
-    let optional_testnet_config = if cli_args.is_present("testnet") {
+    let optional_testnet_config = if cli_args.is_present("network") {
-        clap_utils::parse_hardcoded_network(cli_args, "testnet")?
+        clap_utils::parse_hardcoded_network(cli_args, "network")?
     } else if cli_args.is_present("testnet-dir") {
         clap_utils::parse_testnet_dir(cli_args, "testnet-dir")?
     } else {
-        Eth2TestnetConfig::hard_coded_default()?
+        return Err(
+            "No --network or --testnet-dir flags provided, cannot load config.".to_string(),
+        );
     };
     optional_testnet_config.ok_or_else(|| BAD_TESTNET_DIR_MESSAGE.to_string())
 }

book/src/api-vc-auth-header.md

@@ -22,7 +22,7 @@ The API token can be obtained via two methods:
 ### Method 1: Reading from a file
 
 The API token is stored as a file in the `validators` directory. For most users
-this is `~/.lighthouse/{testnet}/validators/api-token.txt`. Here's an
+this is `~/.lighthouse/{network}/validators/api-token.txt`. Here's an
 example using the `cat` command to print the token to the terminal, but any
 text editor will suffice:
 

book/src/docker.md

@@ -67,10 +67,10 @@ $ docker run lighthouse:local lighthouse --help
 You can run a Docker beacon node with the following command:
 
 ```bash
-$ docker run -p 9000:9000 -p 127.0.0.1:5052:5052 -v $HOME/.lighthouse:/root/.lighthouse sigp/lighthouse lighthouse --testnet medalla beacon --http --http-address 0.0.0.0
+$ docker run -p 9000:9000 -p 127.0.0.1:5052:5052 -v $HOME/.lighthouse:/root/.lighthouse sigp/lighthouse lighthouse --network medalla beacon --http --http-address 0.0.0.0
 ```
 
-> To join the altona testnet, use --testnet altona instead.
+> To join the altona testnet, use --network altona instead.
 
 > The `-p` and `-v` and values are described below.
 

book/src/key-management.md

@@ -42,12 +42,12 @@ keypairs. Creating a single validator looks like this:
 	- `lighthouse --testnet medalla account validator create --wallet-name wally --wallet-password wally.pass --count 1`
 
 
-In step (1), we created a wallet in `~/.lighthouse/{testnet}/wallets` with the name
+In step (1), we created a wallet in `~/.lighthouse/{network}/wallets` with the name
 `wally`. We encrypted this using a pre-defined password in the
 `wally.pass` file. Then, in step (2), we created one new validator in the
-`~/.lighthouse/{testnet}/validators` directory using `wally` (unlocking it with
+`~/.lighthouse/{network}/validators` directory using `wally` (unlocking it with
 `wally.pass`) and storing the passwords to the validators voting key in
-`~/.lighthouse/{testnet}/secrets`.
+`~/.lighthouse/{network}/secrets`.
 
 Thanks to the hierarchical key derivation scheme, we can delete all of the
 aforementioned directories and then regenerate them as long as we remembered
@@ -65,16 +65,16 @@ There are three important directories in Lighthouse validator key management:
 
 - `wallets/`: contains encrypted wallets which are used for hierarchical
 	key derivation.
-	- Defaults to `~/.lighthouse/{testnet}/wallets`
+	- Defaults to `~/.lighthouse/{network}/wallets`
 - `validators/`: contains a directory for each validator containing
 	encrypted keystores and other validator-specific data.
-	- Defaults to `~/.lighthouse/{testnet}/validators`
+	- Defaults to `~/.lighthouse/{network}/validators`
 - `secrets/`: since the validator signing keys are "hot", the validator process
 	needs access to the passwords to decrypt the keystores in the validators
 	dir. These passwords are stored here.
-	- Defaults to `~/.lighthouse/{testnet}/secrets`
+	- Defaults to `~/.lighthouse/{network}/secrets`
 
-where `testnet` is the name of the testnet passed in the `--testnet` parameter (default is `medalla`).
+where `network` is the name of the network passed in the `--network` parameter (default is `medalla`).
 
 When the validator client boots, it searches the `validators/` for directories
 containing voting keystores. When it discovers a keystore, it searches the

book/src/pi.md

@@ -50,9 +50,11 @@ cd lighthouse
 make
 ```
 
-Compiling Lighthouse can take up to an hour. The safety guarantees provided by
+>
-the Rust language unfortunately result in a lengthy compilation time on a
+> Compiling Lighthouse can take up to an hour. The safety guarantees provided by the Rust language
-low-spec CPU like a Raspberry Pi.
+unfortunately result in a lengthy compilation time on a low-spec CPU like a Raspberry Pi. For faster
+compilation on low-spec hardware, try [cross-compiling](./cross-compiling.md) on a more powerful
+computer (e.g., compile for RasPi from your desktop computer).
 
 Once installation has finished, confirm Lighthouse is installed by viewing the
 usage instructions with  `lighthouse --help`.

book/src/testnet-validator.md

@@ -9,25 +9,26 @@ DEPOSITS WITH LIGHTHOUSE. 🚨🚨🚨**
 
 ## Supported Testnets
 
-Lighthouse supports four testnets:
+Lighthouse supports the "mainnet" network and four test networks:
 
 - [Medalla](https://github.com/goerli/medalla/tree/master/medalla) (default)
 - [Pyrmont](https://github.com/protolambda/pyrmont)
 - [Spadina](https://github.com/goerli/medalla/tree/master/spadina) (deprecated)
 - [Altona](https://github.com/goerli/medalla/tree/master/altona) (deprecated)
 
-When using Lighthouse, the `--testnet` flag selects a testnet. E.g.,
+When using Lighthouse, the `--network` flag selects a network. E.g.,
 
 - `lighthouse` (no flag): Medalla.
-- `lighthouse --testnet medalla`: Medalla.
+- `lighthouse --network mainnet`: Mainnet.
-- `lighthouse --testnet pyrmont`: Pyrmont.
+- `lighthouse --network medalla`: Medalla.
+- `lighthouse --network pyrmont`: Pyrmont.
 
-Using the correct `--testnet` flag is very important; using the wrong flag can
+Using the correct `--network` flag is very important; using the wrong flag can
 result in penalties, slashings or lost deposits. As a rule of thumb, always
-provide a `--testnet` flag instead of relying on the default.
+provide a `--network` flag instead of relying on the default.
 
-> Note: In these documents we use `--testnet MY_TESTNET` for demonstration. You
+> Note: In these documents we use `--network MY_NETWORK` for demonstration. You
-> must replace `MY_TESTNET` with a valid testnet name.
+> must replace `MY_NETWORK` with a valid network name. E.g., `--network pyrmont`.
 
 ## Joining a Testnet
 
@@ -112,14 +113,14 @@ Starting these processes is different for binary and docker users:
 Those using the pre- or custom-built binaries can start the two processes with:
 
 ```bash
-lighthouse --testnet MY_TESTNET bn --staking
+lighthouse --network MY_NETWORK bn --staking
 ```
 
 ```bash
-lighthouse --testnet MY_TESTNET vc
+lighthouse --network MY_NETWORK vc
 ```
 
-> Note: `~/.lighthouse/{testnet}` is the default directory which contains the keys and databases.
+> Note: `~/.lighthouse/{network}` is the default directory which contains the keys and databases.
 > To specify a custom dir, see [this](#custom-directories) section
 
 #### Docker users
@@ -130,7 +131,7 @@ Those using Docker images can start the processes with:
 $ docker run \
 	--network host \
 	-v $HOME/.lighthouse:/root/.lighthouse sigp/lighthouse \
-	lighthouse --testnet MY_TESTNET bn --staking --http-address 0.0.0.0
+	lighthouse --network MY_NETWORK bn --staking --http-address 0.0.0.0
 ```
 
 ```bash
@@ -138,7 +139,7 @@ $ docker run \
 	--network host \
 	-v $HOME/.lighthouse:/root/.lighthouse \
 	sigp/lighthouse \
-	lighthouse --testnet MY_TESTNET vc
+	lighthouse --network MY_NETWORK vc
 ```
 
 ### Step 6. Leave Lighthouse running
@@ -171,16 +172,16 @@ Happy staking!
 
 ## Custom directories
 
-Users can override the default Lighthouse data directories (`~/.lighthouse/{testnet}`) using the `--datadir` flag. The custom data directory mirrors the structure of any testnet specific default directory (e.g. `~/.lighthouse/medalla`).
+Users can override the default Lighthouse data directories (`~/.lighthouse/{network}`) using the `--datadir` flag. The custom data directory mirrors the structure of any network specific default directory (e.g. `~/.lighthouse/medalla`).
 
-> Note: Users should specify different custom directories for different testnets.
+> Note: Users should specify different custom directories for different networks.
 
 Below is an example flow for importing validator keys, running a beacon node and validator client using a custom data directory `/var/lib/my-custom-dir` for the medalla testnet.
 
 ```bash
-lighthouse --testnet medalla --datadir /var/lib/my-custom-dir account validator import --directory <PATH-TO-LAUNCHPAD-KEYS-DIRECTORY>
+lighthouse --network medalla --datadir /var/lib/my-custom-dir account validator import --directory <PATH-TO-LAUNCHPAD-KEYS-DIRECTORY>
-lighthouse --testnet medalla --datadir /var/lib/my-custom-dir bn --staking
+lighthouse --network medalla --datadir /var/lib/my-custom-dir bn --staking
-lighthouse --testnet medalla --datadir /var/lib/my-custom-dir vc
+lighthouse --network medalla --datadir /var/lib/my-custom-dir vc
 ```
 The first step creates a `validators` directory under `/var/lib/my-custom-dir` which contains the imported keys and [`validator_definitions.yml`](./validator-management.md).
 After that, we simply run the beacon chain and validator client with the custom dir path.

book/src/validator-create.md

@@ -21,10 +21,11 @@ lighthouse account validator create --help
 Creates new validators from an existing EIP-2386 wallet using the EIP-2333 HD key derivation scheme.
 
 USAGE:
-    lighthouse account_manager validator create [FLAGS] [OPTIONS] --wallet-name <WALLET_NAME> --wallet-password <WALLET_PASSWORD_PATH>
+    lighthouse account_manager validator create [FLAGS] [OPTIONS]
 
 FLAGS:
     -h, --help                         Prints help information
+        --stdin-inputs                 If present, read all user inputs from stdin instead of tty.
         --store-withdrawal-keystore    If present, the withdrawal keystore will be stored alongside the voting keypair.
                                        It is generally recommended to *not* store the withdrawal key and instead
                                        generate them from the wallet seed when required.
@@ -37,28 +38,34 @@ OPTIONS:
         --count <VALIDATOR_COUNT>
             The number of validators to create, regardless of how many already exist
 
-    -d, --datadir <DIR>                               Data directory for lighthouse keys and databases.
+    -d, --datadir <DIR>
+            Used to specify a custom root data directory for lighthouse keys and databases. Defaults to
+            $HOME/.lighthouse/{network} where network is the value of the `network` flag Note: Users should specify
+            separate custom datadirs for different networks.
         --debug-level <LEVEL>
             The verbosity level for emitting logs. [default: info]  [possible values: info, debug, trace, warn, error,
             crit]
         --deposit-gwei <DEPOSIT_GWEI>
             The GWEI value of the deposit amount. Defaults to the minimum amount required for an active validator
             (MAX_EFFECTIVE_BALANCE)
+        --network <network>
+            Name of the Eth2 chain Lighthouse will sync and follow. [default: mainnet]  [possible values: medalla,
+            altona, spadina, pyrmont, mainnet, toledo]
         --secrets-dir <SECRETS_DIR>
-            The path where the validator keystore passwords will be stored. Defaults to ~/.lighthouse/{testnet}/secrets
+            The path where the validator keystore passwords will be stored. Defaults to ~/.lighthouse/{network}/secrets
-
-        --testnet <testnet>
-            Name of network lighthouse will connect to [possible values: medalla, altona]
 
+    -s, --spec <DEPRECATED>
+            This flag is deprecated, it will be disallowed in a future release. This value is now derived from the
+            --network or --testnet-dir flags.
     -t, --testnet-dir <DIR>
             Path to directory containing eth2_testnet specs. Defaults to a hard-coded Lighthouse testnet. Only effective
             if there is no existing database.
-        --validator-dir <VALIDATOR_DIRECTORY>
-            The path where the validator directories will be created. Defaults to ~/.lighthouse/{testnet}/validators
-
         --wallet-name <WALLET_NAME>                 Use the wallet identified by this name
         --wallet-password <WALLET_PASSWORD_PATH>
             A path to a file containing the password which will unlock the wallet.
+
+        --wallets-dir <wallets-dir>
+            A path containing Eth2 EIP-2386 wallets. Defaults to ~/.lighthouse/{network}/wallets
 ```
 
 ## Example
@@ -67,19 +74,17 @@ The example assumes that the `wally` wallet was generated from the
 [wallet](./wallet-create.md) example.
 
 ```bash
-lighthouse --testnet medalla account validator create --name wally --wallet-password wally.pass --count 1
+lighthouse --network medalla account validator create --name wally --wallet-password wally.pass --count 1
 ```
 
 This command will:
 
 - Derive a single new BLS keypair from wallet `wally` in `~/.lighthouse/{testnet}/wallets`, updating it so that it generates a
     new key next time.
-- Create a new directory in `~/.lighthouse/{testnet}/validators` containing:
+- Create a new directory in `~/.lighthouse/{network}/validators` containing:
     - An encrypted keystore containing the validators voting keypair.
 	- An `eth1_deposit_data.rlp` assuming the default deposit amount (`32 ETH`
 		for most testnets and mainnet) which can be submitted to the deposit
-		contract for the medalla testnet. Other testnets can be set via the
+		contract for the Medalla testnet. Other testnets can be set via the
-		`--testnet` CLI param.
+		`--network` CLI param.
-- Store a password to the validators voting keypair in `~/.lighthouse/{testnet}/secrets`.
+- Store a password to the validators voting keypair in `~/.lighthouse/{network}/secrets`.
-
-where `testnet` is the name of the testnet passed in the `--testnet` parameter (default is `medalla`).

book/src/validator-import-launchpad.md

@@ -35,7 +35,7 @@ section, all other users can use:
 
 
 ```bash
-lighthouse --testnet medalla account validator import --directory validator_keys
+lighthouse --network medalla account validator import --directory validator_keys
 ```
 
 Note: The user must specify the testnet that they are importing the keys for using the `--testnet` flag.
@@ -101,7 +101,7 @@ docker run -it \
 	-v $HOME/.lighthouse:/root/.lighthouse \
 	-v $(pwd)/validator_keys:/root/validator_keys \
 	sigp/lighthouse \
-	lighthouse --testnet medalla account validator import --directory /root/validator_keys
+	lighthouse --network MY_NETWORK account validator import --directory /root/validator_keys
 ```
 
 Here we use two `-v` volumes to attach:

book/src/validator-management.md

@@ -16,7 +16,7 @@ useful.
 ## Introducing the `validator_definitions.yml` file
 
 The `validator_definitions.yml` file is located in the `validator-dir`, which
-defaults to `~/.lighthouse/{testnet}/validators`. It is a
+defaults to `~/.lighthouse/{network}/validators`. It is a
 [YAML](https://en.wikipedia.org/wiki/YAML) encoded file defining exactly which
 validators the validator client will (and won't) act for.
 
@@ -92,7 +92,7 @@ name identical to the `voting_public_key` value.
 Lets assume the following directory structure:
 
 ```
-~/.lighthouse/{testnet}/validators
+~/.lighthouse/{network}/validators
 ├── john
 │   └── voting-keystore.json
 ├── sally
@@ -135,7 +135,7 @@ In order for the validator client to decrypt the validators, they will need to
 ensure their `secrets-dir` is organised as below:
 
 ```
-~/.lighthouse/{testnet}/secrets
+~/.lighthouse/{network}/secrets
 ├── 0xa5566f9ec3c6e1fdf362634ebec9ef7aceb0e460e5079714808388e5d48f4ae1e12897fed1bea951c17fa389d511e477
 ├── 0xaa440c566fcf34dedf233baf56cf5fb05bb420d9663b4208272545608c27c13d5b08174518c758ecd814f158f2b4a337
 └── 0x87a580d31d7bc69069b55f5a01995a610dd391a26dc9e36e81057a17211983a79266800ab8531f21f1083d7d84085007

boot_node/src/config.rs

@@ -30,7 +30,7 @@ impl<T: EthSpec> TryFrom<&ArgMatches<'_>> for BootNodeConfig<T> {
 
         // Try and grab testnet config from input CLI params
         let eth2_testnet_config = {
-            if matches.is_present("testnet") {
+            if matches.is_present("network") {
                 Some(get_eth2_testnet_config(&matches)?)
             } else {
                 None

common/directory/src/lib.rs

@@ -14,13 +14,13 @@ pub const DEFAULT_WALLET_DIR: &str = "wallets";
 /// Base directory name for unnamed testnets passed through the --testnet-dir flag
 pub const CUSTOM_TESTNET_DIR: &str = "custom";
 
-/// Gets the testnet directory name
+/// Gets the network directory name
 ///
-/// Tries to get the name first from the "testnet" flag,
+/// Tries to get the name first from the "network" flag,
 /// if not present, then checks the "testnet-dir" flag and returns a custom name
 /// If neither flags are present, returns the default hardcoded network name.
 pub fn get_testnet_name(matches: &ArgMatches) -> String {
-    if let Some(testnet_name) = matches.value_of("testnet") {
+    if let Some(testnet_name) = matches.value_of("network") {
         testnet_name.to_string()
     } else if matches.value_of("testnet-dir").is_some() {
         CUSTOM_TESTNET_DIR.to_string()

common/eth2_testnet_config/built_in_testnet_configs/altona/deposit_contract.txt

@@ -1 +0,0 @@
-0x16e82D77882A663454Ef92806b7DeCa1D394810f

common/eth2_testnet_config/built_in_testnet_configs/mainnet/deposit_contract.txt

@@ -1 +0,0 @@
-0x00000000219ab540356cBB839Cbe05303d7705Fa

common/eth2_testnet_config/built_in_testnet_configs/medalla/deposit_contract.txt

@@ -1 +0,0 @@
-0x07b39F4fDE4A38bACe212b546dAc87C58DfE3fDC

common/eth2_testnet_config/built_in_testnet_configs/pyrmont/deposit_contract.txt

@@ -1 +0,0 @@
-0x8c5fecdC472E27Bc447696F431E425D02dd46a8c

common/eth2_testnet_config/built_in_testnet_configs/spadina/deposit_contract.txt

@@ -1 +0,0 @@
-0x48B597F4b53C21B48AD95c7256B49D1779Bd5890

common/eth2_testnet_config/built_in_testnet_configs/toledo/deposit_contract.txt

@@ -1 +0,0 @@
-0x47709dC7a8c18688a1f051761fc34ac253970bC0

common/eth2_testnet_config/src/lib.rs

@@ -14,7 +14,7 @@ use ssz::Decode;
 use std::fs::{create_dir_all, File};
 use std::io::{Read, Write};
 use std::path::PathBuf;
-use types::{Address, BeaconState, EthSpec, EthSpecId, YamlConfig};
+use types::{BeaconState, EthSpec, EthSpecId, YamlConfig};
 
 pub const ADDRESS_FILE: &str = "deposit_contract.txt";
 pub const DEPLOY_BLOCK_FILE: &str = "deploy_block.txt";
@@ -29,7 +29,6 @@ pub struct HardcodedNet {
     pub yaml_config: &'static [u8],
     pub deploy_block: &'static [u8],
     pub boot_enr: &'static [u8],
-    pub deposit_contract_address: &'static [u8],
     pub genesis_state_bytes: &'static [u8],
 }
 
@@ -43,7 +42,6 @@ macro_rules! define_net {
             yaml_config: $include_file!("../", "config.yaml"),
             deploy_block: $include_file!("../", "deploy_block.txt"),
             boot_enr: $include_file!("../", "boot_enr.yaml"),
-            deposit_contract_address: $include_file!("../", "deposit_contract.txt"),
             genesis_state_bytes: $include_file!("../", "genesis.ssz"),
         }
     }};
@@ -57,14 +55,13 @@ const MAINNET: HardcodedNet = define_net!(mainnet, include_mainnet_file);
 const TOLEDO: HardcodedNet = define_net!(toledo, include_toledo_file);
 
 const HARDCODED_NETS: &[HardcodedNet] = &[ALTONA, MEDALLA, SPADINA, PYRMONT, MAINNET, TOLEDO];
-pub const DEFAULT_HARDCODED_TESTNET: &str = "medalla";
+pub const DEFAULT_HARDCODED_TESTNET: &str = "mainnet";
 
 /// Specifies an Eth2 testnet.
 ///
 /// See the crate-level documentation for more details.
 #[derive(Clone, PartialEq, Debug)]
 pub struct Eth2TestnetConfig {
-    pub deposit_contract_address: String,
     /// Note: instead of the block where the contract is deployed, it is acceptable to set this
     /// value to be the block number where the first deposit occurs.
     pub deposit_contract_deploy_block: u64,
@@ -74,10 +71,6 @@ pub struct Eth2TestnetConfig {
 }
 
 impl Eth2TestnetConfig {
-    /// Returns the default hard coded testnet.
-    pub fn hard_coded_default() -> Result<Option<Self>, String> {
-        Self::constant(DEFAULT_HARDCODED_TESTNET)
-    }
     /// When Lighthouse is built it includes zero or more "hardcoded" network specifications. This
     /// function allows for instantiating one of these nets by name.
     pub fn constant(name: &str) -> Result<Option<Self>, String> {
@@ -91,8 +84,6 @@ impl Eth2TestnetConfig {
     /// Instantiates `Self` from a `HardcodedNet`.
     fn from_hardcoded_net(net: &HardcodedNet) -> Result<Self, String> {
         Ok(Self {
-            deposit_contract_address: serde_yaml::from_reader(net.deposit_contract_address)
-                .map_err(|e| format!("Unable to parse contract address: {:?}", e))?,
             deposit_contract_deploy_block: serde_yaml::from_reader(net.deploy_block)
                 .map_err(|e| format!("Unable to parse deploy block: {:?}", e))?,
             boot_enr: Some(
@@ -177,7 +168,6 @@ impl Eth2TestnetConfig {
             };
         }
 
-        write_to_yaml_file!(ADDRESS_FILE, self.deposit_contract_address);
         write_to_yaml_file!(DEPLOY_BLOCK_FILE, self.deposit_contract_deploy_block);
 
         if let Some(boot_enr) = &self.boot_enr {
@@ -225,7 +215,6 @@ impl Eth2TestnetConfig {
             };
         }
 
-        let deposit_contract_address = load_from_file!(ADDRESS_FILE);
         let deposit_contract_deploy_block = load_from_file!(DEPLOY_BLOCK_FILE);
         let boot_enr = optional_load_from_file!(BOOT_ENR_FILE);
         let yaml_config = optional_load_from_file!(YAML_CONFIG_FILE);
@@ -247,23 +236,12 @@ impl Eth2TestnetConfig {
         };
 
         Ok(Self {
-            deposit_contract_address,
             deposit_contract_deploy_block,
             boot_enr,
             genesis_state_bytes,
             yaml_config,
         })
     }
-
-    pub fn deposit_contract_address(&self) -> Result<Address, String> {
-        if self.deposit_contract_address.starts_with("0x") {
-            self.deposit_contract_address[2..]
-                .parse()
-                .map_err(|e| format!("Corrupted address, unable to parse: {:?}", e))
-        } else {
-            Err("Corrupted address, must start with 0x".to_string())
-        }
-    }
 }
 
 #[cfg(test)]
@@ -334,11 +312,9 @@ mod tests {
     ) {
         let temp_dir = TempDir::new("eth2_testnet_test").expect("should create temp dir");
         let base_dir = temp_dir.path().join("my_testnet");
-        let deposit_contract_address = "0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413".to_string();
         let deposit_contract_deploy_block = 42;
 
         let testnet: Eth2TestnetConfig = Eth2TestnetConfig {
-            deposit_contract_address,
             deposit_contract_deploy_block,
             boot_enr,
             genesis_state_bytes: genesis_state.as_ref().map(Encode::as_ssz_bytes),

lcli/src/eth1_genesis.rs

@@ -41,7 +41,7 @@ pub fn run<T: EthSpec>(mut env: Environment<T>, matches: &ArgMatches<'_>) -> Res
 
     let mut config = Eth1Config::default();
     config.endpoint = endpoint.to_string();
-    config.deposit_contract_address = eth2_testnet_config.deposit_contract_address.clone();
+    config.deposit_contract_address = format!("{:?}", spec.deposit_contract_address);
     config.deposit_contract_deploy_block = eth2_testnet_config.deposit_contract_deploy_block;
     config.lowest_cached_block_number = eth2_testnet_config.deposit_contract_deploy_block;
     config.follow_distance = spec.eth1_follow_distance / 2;

lcli/src/new_testnet.rs

@@ -35,6 +35,8 @@ pub fn run<T: EthSpec>(matches: &ArgMatches) -> Result<(), String> {
         };
     }
 
+    spec.deposit_contract_address = deposit_contract_address;
+
     maybe_update!("min-genesis-time", min_genesis_time);
     maybe_update!("min-deposit-amount", min_deposit_amount);
     maybe_update!(
@@ -52,7 +54,6 @@ pub fn run<T: EthSpec>(matches: &ArgMatches) -> Result<(), String> {
     }
 
     let testnet = Eth2TestnetConfig {
-        deposit_contract_address: format!("{:?}", deposit_contract_address),
         deposit_contract_deploy_block,
         boot_enr: Some(vec![]),
         genesis_state_bytes: None,

lighthouse/environment/tests/environment_builder.rs

@@ -1,7 +1,7 @@
 #![cfg(test)]
 
 use environment::EnvironmentBuilder;
-use eth2_testnet_config::Eth2TestnetConfig;
+use eth2_testnet_config::{Eth2TestnetConfig, DEFAULT_HARDCODED_TESTNET};
 use std::path::PathBuf;
 use types::{V012LegacyEthSpec, YamlConfig};
 
@@ -14,7 +14,7 @@ fn builder() -> EnvironmentBuilder<V012LegacyEthSpec> {
 }
 
 fn eth2_testnet_config() -> Option<Eth2TestnetConfig> {
-    Eth2TestnetConfig::hard_coded_default().expect("should decode hard_coded params")
+    Eth2TestnetConfig::constant(DEFAULT_HARDCODED_TESTNET).expect("should decode mainnet params")
 }
 
 mod setup_eth2_config {

lighthouse/src/main.rs

@@ -47,7 +47,7 @@ fn main() {
                 .long("spec")
                 .value_name("DEPRECATED")
                 .help("This flag is deprecated, it will be disallowed in a future release. This \
-                    value is now derived from the --testnet or --testnet-dir flags.")
+                    value is now derived from the --network or --testnet-dir flags.")
                 .takes_value(true)
                 .global(true)
         )
@@ -93,8 +93,8 @@ fn main() {
                 .global(true)
                 .help(
                     "Used to specify a custom root data directory for lighthouse keys and databases. \
-                    Defaults to $HOME/.lighthouse/{testnet} where testnet is the value of the `testnet` flag \
+                    Defaults to $HOME/.lighthouse/{network} where network is the value of the `network` flag \
-                    Note: Users should specify separate custom datadirs for different testnets.")
+                    Note: Users should specify separate custom datadirs for different networks.")
                 .takes_value(true),
         )
         .arg(
@@ -111,12 +111,13 @@ fn main() {
                 .global(true),
         )
         .arg(
-            Arg::with_name("testnet")
+            Arg::with_name("network")
-                .long("testnet")
+                .long("network")
-                .value_name("testnet")
+                .value_name("network")
-                .help("Name of network lighthouse will connect to")
+                .help("Name of the Eth2 chain Lighthouse will sync and follow.")
                 .possible_values(&["medalla", "altona", "spadina", "pyrmont", "mainnet", "toledo"])
                 .conflicts_with("testnet-dir")
+                .default_value(DEFAULT_HARDCODED_TESTNET)
                 .takes_value(true)
                 .global(true)
 
@@ -176,12 +177,11 @@ fn load_testnet_config(matches: &ArgMatches) -> Result<Eth2TestnetConfig, String
     if matches.is_present("testnet-dir") {
         clap_utils::parse_testnet_dir(matches, "testnet-dir")?
             .ok_or_else(|| "Unable to load testnet dir".to_string())
-    } else if matches.is_present("testnet") {
+    } else if matches.is_present("network") {
-        clap_utils::parse_hardcoded_network(matches, "testnet")?
+        clap_utils::parse_hardcoded_network(matches, "network")?
             .ok_or_else(|| "Unable to load hard coded network config".to_string())
     } else {
-        Eth2TestnetConfig::hard_coded_default()?
+        Err("No --network or --testnet-dir flags provided, cannot start.".to_string())
-            .ok_or_else(|| "Unable to load default network config".to_string())
     }
 }
 
@@ -192,7 +192,7 @@ fn run<E: EthSpec>(
 ) -> Result<(), String> {
     if std::mem::size_of::<usize>() != 8 {
         return Err(format!(
-            "{}bit architecture is not supported (64bit only).",
+            "{}-bit architecture is not supported (64-bit only).",
             std::mem::size_of::<usize>() * 8
         ));
     }
@@ -244,18 +244,18 @@ fn run<E: EthSpec>(
     // Creating a command which can run both might be useful future works.
 
     // Print an indication of which network is currently in use.
-    let optional_testnet = clap_utils::parse_optional::<String>(matches, "testnet")?;
+    let optional_testnet = clap_utils::parse_optional::<String>(matches, "network")?;
     let optional_testnet_dir = clap_utils::parse_optional::<PathBuf>(matches, "testnet-dir")?;
 
     let testnet_name = match (optional_testnet, optional_testnet_dir) {
         (Some(testnet), None) => testnet,
         (None, Some(testnet_dir)) => format!("custom ({})", testnet_dir.display()),
         (None, None) => DEFAULT_HARDCODED_TESTNET.to_string(),
-        (Some(_), Some(_)) => panic!("CLI prevents both --testnet and --testnet-dir"),
+        (Some(_), Some(_)) => panic!("CLI prevents both --network and --testnet-dir"),
     };
 
     if let Some(sub_matches) = matches.subcommand_matches("account_manager") {
-        eprintln!("Running account manager for {} testnet", testnet_name);
+        eprintln!("Running account manager for {} network", testnet_name);
         // Pass the entire `environment` to the account manager so it can run blocking operations.
         account_manager::run(sub_matches, environment)?;
 

validator_client/src/cli.rs

@@ -47,7 +47,7 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
                     "The directory which contains the password to unlock the validator \
                     voting keypairs. Each password should be contained in a file where the \
                     name is the 0x-prefixed hex representation of the validators voting public \
-                    key. Defaults to ~/.lighthouse/{testnet}/secrets.",
+                    key. Defaults to ~/.lighthouse/{network}/secrets.",
                 )
                 .takes_value(true)
                 .conflicts_with("datadir")

validator_client/src/lib.rs

@@ -188,13 +188,13 @@ impl<T: EthSpec> ProductionValidatorClient<T> {
         let beacon_node_spec = yaml_config.apply_to_chain_spec::<T>(&T::default_spec())
             .ok_or_else(||
                     "The minimal/mainnet spec type of the beacon node does not match the validator client. \
-                    See the --testnet command.".to_string()
+                    See the --network command.".to_string()
             )?;
 
         if context.eth2_config.spec != beacon_node_spec {
             return Err(
                 "The beacon node is using a different Eth2 specification to this validator client. \
-                See the --testnet command."
+                See the --network command."
                     .to_string(),
             );
         }