Duplicate code from libp2p because it is not exported anymore

codex/errors.nim

@@ -38,6 +38,29 @@ func toFailure*[T](exp: Option[T]): Result[T, ref CatchableError] {.inline.} =
   else:
     T.failure("Option is None")
 
+# allFuturesThrowing was moved to the tests in libp2p
+proc allFuturesThrowing*[T](args: varargs[Future[T]]): Future[void] =
+  var futs: seq[Future[T]]
+  for fut in args:
+    futs &= fut
+  proc call() {.async.} =
+    var first: ref CatchableError = nil
+    futs = await allFinished(futs)
+    for fut in futs:
+      if fut.failed:
+        let err = fut.readError()
+        if err of Defect:
+          raise err
+        else:
+          if err of CancelledError:
+            raise err
+          if isNil(first):
+            first = err
+    if not isNil(first):
+      raise first
+
+  return call()
+
 proc allFutureResult*[T](fut: seq[Future[T]]): Future[?!void] {.async.} =
   try:
     await allFuturesThrowing(fut)

codex/merkletree/codex/codex.nim

@@ -47,6 +47,14 @@ type
   CodexProof* = ref object of ByteProof
     mcodec*: MultiCodec
 
+# CodeHashes is not exported from libp2p
+# So we need to recreate it instead of 
+proc initMultiHashCodeTable(): Table[MultiCodec, MHash] {.compileTime.} =
+  for item in HashesList:
+    result[item.mcodec] = item
+
+const CodeHashes = initMultiHashCodeTable()
+
 func mhash*(mcodec: MultiCodec): ?!MHash =
   let
     mhash = CodeHashes.getOrDefault(mcodec)