From 263d245cacbf461d6a64b7825185133935573916 Mon Sep 17 00:00:00 2001
From: Etan Kissling <etan@status.im>
Date: Thu, 13 Jun 2024 12:49:03 +0200
Subject: [PATCH] Work around Nim bug that erases type `{.pragma.}` when making
 alias

Replaces `type` with inlined `template` because assigning to a new type
drops pragma annotations in some situations.
---
 serialization/object_serialization.nim | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/serialization/object_serialization.nim b/serialization/object_serialization.nim
index 336b905..02b653c 100644
--- a/serialization/object_serialization.nim
+++ b/serialization/object_serialization.nim
@@ -104,7 +104,6 @@ macro enumAllSerializedFieldsImpl(T: type, body: untyped): untyped =
       continue
 
     let
-      fieldType = field.typ
       fieldIdent = field.name
       realFieldName = newLit($fieldIdent.skipPragma)
       serializedFieldName = field.readPragma("serializedFieldName")
@@ -137,7 +136,9 @@ macro enumAllSerializedFieldsImpl(T: type, body: untyped): untyped =
       block:
         `fieldNameDefs`
 
-        type FieldType {.inject, used.} = type(`field`)
+        # `FieldType` should be `type`:
+        # https://github.com/nim-lang/Nim/issues/23564
+        template FieldType: untyped {.inject, used.} = typeof(`field`)
 
         template fieldCaseDiscriminator: auto {.used.} = `discriminator`
         template fieldCaseBranches: auto {.used.} = `branches`