nim devel workaround

.github/workflows/ci.yml

@@ -156,4 +156,5 @@ jobs:
           nim --version
           nimble --version
           nimble install -y --depsOnly
+          rm -f nimble.lock
           nimble test

.gitignore

@@ -3,3 +3,5 @@ tests/test_all
 nimble.develop
 nimble.paths
 build/
+
+*.exe

nimble.lock

@@ -2,53 +2,54 @@
   "version": 1,
   "packages": {
     "unittest2": {
-      "version": "0.0.4",
-      "vcsRevision": "f180f596c88dfd266f746ed6f8dbebce39c824db",
-      "url": "https://github.com/status-im/nim-unittest2.git",
+      "version": "0.0.5",
+      "vcsRevision": "da8398c45cafd5bd7772da1fc96e3924a18d3823",
+      "url": "https://github.com/status-im/nim-unittest2",
       "downloadMethod": "git",
       "dependencies": [],
       "checksums": {
-        "sha1": "fa309c41eaf6ef57895b9e603f2620a2f6e11780"
+        "sha1": "b3f8493a4948989ef3e645a38b23aad77e851e26"
       }
     },
     "stew": {
       "version": "0.1.0",
-      "vcsRevision": "6ad35b876fb6ebe0dfee0f697af173acc47906ee",
+      "vcsRevision": "447b23d3bf6eb7be6531385e4db9124772c98068",
       "url": "https://github.com/status-im/nim-stew.git",
       "downloadMethod": "git",
       "dependencies": [],
       "checksums": {
-        "sha1": "46d58c4feb457f3241e3347778334e325dce5268"
+        "sha1": "98cbd5289c44e355d50b3914b0876ea0dd2a6813"
       }
     },
     "httputils": {
       "version": "0.3.0",
-      "vcsRevision": "689da19e9e9cfff4ced85e2b25c6b2b5598ed079",
-      "url": "https://github.com/status-im/nim-http-utils.git",
+      "vcsRevision": "a85bd52ae0a956983ca6b3267c72961d2ec0245f",
+      "url": "https://github.com/status-im/nim-http-utils",
       "downloadMethod": "git",
       "dependencies": [
-        "stew"
+        "stew",
+        "unittest2"
       ],
       "checksums": {
-        "sha1": "4ad3ad68d13c50184180ab4b2eacc0bd7ed2ed44"
+        "sha1": "92933b21bcd29335f68e377e2b2193fa331e28b3"
       }
     },
     "bearssl": {
-      "version": "0.1.5",
-      "vcsRevision": "ba80e2a0d7ae8aab666cee013e38ff8d33a3e5e7",
+      "version": "0.2.0",
+      "vcsRevision": "acf9645e328bdcab481cfda1c158e07ecd46bd7b",
       "url": "https://github.com/status-im/nim-bearssl",
       "downloadMethod": "git",
       "dependencies": [
         "unittest2"
       ],
       "checksums": {
-        "sha1": "383abd5becc77bf8e365b780a29d20529e1d9c4c"
+        "sha1": "c939aef6a1c17c95131242a6292ade1c92380792"
       }
     },
     "chronos": {
       "version": "3.0.11",
-      "vcsRevision": "17fed89c99beac5a92d3668d0d3e9b0e4ac13936",
-      "url": "https://github.com/status-im/nim-chronos.git",
+      "vcsRevision": "8fcbe716b2f069480277aa6781782d3e311ee2c0",
+      "url": "https://github.com/status-im/nim-chronos",
       "downloadMethod": "git",
       "dependencies": [
         "stew",
@@ -57,34 +58,21 @@
         "unittest2"
       ],
       "checksums": {
-        "sha1": "f6fffc87571e5f76af2a77c4ebcc0e00909ced4e"
-      }
-    },
-    "testutils": {
-      "version": "0.4.2",
-      "vcsRevision": "aa6e5216f4b4ab5aa971cdcdd70e1ec1203cedf2",
-      "url": "https://github.com/status-im/nim-testutils",
-      "downloadMethod": "git",
-      "dependencies": [
-        "unittest2"
-      ],
-      "checksums": {
-        "sha1": "94427e0cce0e0c5841edcd3a6530b4e6b857a3cb"
+        "sha1": "a9f6c91ea5b2f48dddd8500c9556562185102808"
       }
     },
     "faststreams": {
       "version": "0.3.0",
-      "vcsRevision": "1b561a9e71b6bdad1c1cdff753418906037e9d09",
-      "url": "https://github.com/status-im/nim-faststreams.git",
+      "vcsRevision": "814f8927e1f356f39219f37f069b83066bcc893a",
+      "url": "https://github.com/status-im/nim-faststreams",
       "downloadMethod": "git",
       "dependencies": [
         "stew",
-        "testutils",
         "chronos",
         "unittest2"
       ],
       "checksums": {
-        "sha1": "97edf9797924af48566a0af8267203dc21d80c77"
+        "sha1": "16c69a7b454d803dcf28f6115f42bb47421d9376"
       }
     }
   }

serialization/object_serialization.nim

@@ -201,9 +201,11 @@ template writeFieldIMPL*[Writer](writer: var Writer,
   mixin writeValue
   writeValue(writer, fieldVal)
 
-proc makeFieldReadersTable(RecordType, ReaderType: distinct type):
-                           seq[FieldReader[RecordType, ReaderType]] =
+proc makeFieldReadersTable(RecordType, ReaderType: distinct type,
+                           numFields: static[int]):
+                           array[numFields, FieldReader[RecordType, ReaderType]] =
   mixin enumAllSerializedFields, readFieldIMPL, handleReadException
+  var idx = 0
 
   enumAllSerializedFields(RecordType):
     proc readField(obj: var RecordType, reader: var ReaderType)
@@ -232,19 +234,17 @@ proc makeFieldReadersTable(RecordType, ReaderType: distinct type):
           when RecordType is tuple: obj[i] else: field(obj, realFieldName),
           err)
 
-    result.add((fieldName, readField))
+    result[idx] = (fieldName, readField)
+    inc idx
 
-proc fieldReadersTable*(RecordType, ReaderType: distinct type):
-                        ptr seq[FieldReader[RecordType, ReaderType]] =
+proc fieldReadersTable*(RecordType, ReaderType: distinct type): auto =
   mixin readValue
-
-  # careful: https://github.com/nim-lang/Nim/issues/17085
-  # TODO why is this even here? one could just return the function pointer
-  #      to the field reader directly instead of going through this seq etc
-  var tbl {.threadvar.}: ref seq[FieldReader[RecordType, ReaderType]]
+  type T = RecordType
+  const numFields = totalSerializedFields(T)
+  var tbl {.threadvar.}: ref array[numFields, FieldReader[RecordType, ReaderType]]
   if tbl == nil:
     tbl = new typeof(tbl)
-    tbl[] = makeFieldReadersTable(RecordType, ReaderType)
+    tbl[] = makeFieldReadersTable(RecordType, ReaderType, numFields)
   return addr(tbl[])
 
 proc findFieldIdx*(fieldsTable: FieldReadersTable,