Switch to Nim v1.0.2

.travis.yml

@@ -36,6 +36,7 @@ install:
 
 script:
   - set -e # fail fast
+  - make -j2 update # to allow a newer Nim version to be detected
   - make -j2
   - make -j2 DISABLE_LFS_SCRIPT=1 test
 

beacon_chain/beacon_node.nim

@@ -311,8 +311,9 @@ proc addLocalValidators(node: BeaconNode, state: BeaconState) =
 
   info "Local validators attached ", count = node.attachedValidators.count
 
-proc getAttachedValidator(
-    node: BeaconNode, state: BeaconState, idx: ValidatorIndex): AttachedValidator =
+proc getAttachedValidator(node: BeaconNode,
+                          state: BeaconState,
+                          idx: ValidatorIndex): AttachedValidator =
   let validatorKey = state.validators[idx].pubkey
   node.attachedValidators.getValidator(validatorKey)
 

beacon_chain/eth2_network.nim

@@ -251,10 +251,10 @@ else:
   func peersCount*(node: Eth2Node): int =
     node.peers.len
 
-  proc makeMessageHandler[MsgType](msgHandler: proc(msg: MsgType)): P2PPubSubCallback =
+  proc makeMessageHandler[MsgType](msgHandler: proc(msg: MsgType) {.gcsafe.}): P2PPubSubCallback =
     result = proc(api: DaemonAPI,
                   ticket: PubsubTicket,
-                  msg: PubSubMessage): Future[bool] {.async.} =
+                  msg: PubSubMessage): Future[bool] {.async, gcsafe.} =
       inc gossip_messages_received
       trace "Incoming gossip bytes",
         peer = msg.peer, len = msg.data.len, tops = msg.topics
@@ -263,7 +263,7 @@ else:
 
   proc subscribe*[MsgType](node: Eth2Node,
                            topic: string,
-                           msgHandler: proc(msg: MsgType)) {.async.} =
+                           msgHandler: proc(msg: MsgType) {.gcsafe.} ) {.async, gcsafe.} =
     discard await node.daemon.pubsubSubscribe(topic, makeMessageHandler(msgHandler))
 
   proc broadcast*(node: Eth2Node, topic: string, msg: auto) =

beacon_chain/spec/validator.nim

@@ -66,7 +66,7 @@ func get_shuffled_seq*(seed: Eth2Digest,
       let
         cur_idx_permuted = shuffled_active_validator_indices[index]
         flip = ((list_size + pivot) - cur_idx_permuted.uint64) mod list_size
-        position = max(cur_idx_permuted, flip.int)
+        position = max(cur_idx_permuted.int, flip.int)
 
       let
         source = sources[position div 256].data

research/state_sim.nim

@@ -37,7 +37,7 @@ proc writeJson*(prefix, slot, v: auto) =
   let fileName = fmt"{prefix:04}-{shortLog(slot):08}.json"
   Json.saveFile(fileName, v, pretty = true)
 
-cli do(slots = 448,
+cli do(slots = 448'u,
        validators = SLOTS_PER_EPOCH * 9, # One per shard is minimum
        json_interval = SLOTS_PER_EPOCH,
        prefix = 0,

vendor/nim-libp2p

@@ -1 +1 @@
-Subproject commit f2b10776dbdfab2986ef35499994028a6809250c
+Subproject commit 21af0810663901abc832ff7f29e3920a9f22392a

vendor/nim-stew

@@ -1 +1 @@
-Subproject commit 2bdd2fab6e9bdcdcb51ea7e09d077f36a29faf4c
+Subproject commit 0c3ab3eb78dc495a7662d397d04dff07d1a490c6

vendor/nim-web3

@@ -1 +1 @@
-Subproject commit 817c819847368471ea782880088299cda4045c5a
+Subproject commit 5107c088bc90f1cc62df9dcda077333c20f3a778

vendor/nimbus-build-system

@@ -1 +1 @@
-Subproject commit 648a08f970b521171c1eac004a0f7e5854243c20
+Subproject commit c29bc8342c5ec2ffb87310460246f4de953ba933