Update to spec v0.9.0

eth2/state_processing/src/genesis.rs

@@ -1,12 +1,11 @@
 use super::per_block_processing::{errors::BlockProcessingError, process_deposit};
-use crate::common::get_compact_committees_root;
 use tree_hash::TreeHash;
 use types::typenum::U4294967296;
 use types::*;
 
 /// Initialize a `BeaconState` from genesis data.
 ///
-/// Spec v0.8.0
+/// Spec v0.9.0
 // TODO: this is quite inefficient and we probably want to rethink how we do this
 pub fn initialize_beacon_state_from_eth1<T: EthSpec>(
     eth1_block_hash: Hash256,
@@ -24,6 +23,9 @@ pub fn initialize_beacon_state_from_eth1<T: EthSpec>(
     };
     let mut state = BeaconState::new(genesis_time, eth1_data, spec);
 
+    // Seed RANDAO with Eth1 entropy
+    state.fill_randao_mixes_with(eth1_block_hash);
+
     // Process deposits
     let leaves: Vec<_> = deposits
         .iter()
@@ -51,21 +53,12 @@ pub fn initialize_beacon_state_from_eth1<T: EthSpec>(
     // Now that we have our validators, initialize the caches (including the committees)
     state.build_all_caches(spec)?;
 
-    // Populate active_index_roots and compact_committees_roots
-    let indices_list = VariableList::<usize, T::ValidatorRegistryLimit>::from(
-        state.get_active_validator_indices(T::genesis_epoch()),
-    );
-    let active_index_root = Hash256::from_slice(&indices_list.tree_hash_root());
-    let committee_root = get_compact_committees_root(&state, RelativeEpoch::Current, spec)?;
-    state.fill_active_index_roots_with(active_index_root);
-    state.fill_compact_committees_roots_with(committee_root);
-
     Ok(state)
 }
 
 /// Determine whether a candidate genesis state is suitable for starting the chain.
 ///
-/// Spec v0.8.1
+/// Spec v0.9.0
 pub fn is_valid_genesis_state<T: EthSpec>(state: &BeaconState<T>, spec: &ChainSpec) -> bool {
     state.genesis_time >= spec.min_genesis_time
         && state.get_active_validator_indices(T::genesis_epoch()).len() as u64