diff --git a/lib/system/alloc.nim b/lib/system/alloc.nim
index e938dc475..d4c686869 100644
--- a/lib/system/alloc.nim
+++ b/lib/system/alloc.nim
@@ -224,10 +224,6 @@ proc addChunkToMatrix(a: var MemRegion; b: PBigChunk) =
   setBit(sl, a.slBitmap[fl])
   setBit(fl, a.flBitmap)
 
-{.push stack_trace: off.}
-proc initAllocator() = discard "nothing to do anymore"
-{.pop.}
-
 proc incCurrMem(a: var MemRegion, bytes: int) {.inline.} =
   inc(a.currMem, bytes)
 
diff --git a/lib/system/ansi_c.nim b/lib/system/ansi_c.nim
index 552962775..47d30886c 100644
--- a/lib/system/ansi_c.nim
+++ b/lib/system/ansi_c.nim
@@ -139,4 +139,11 @@ proc c_free(p: pointer) {.
 proc c_realloc(p: pointer, newsize: csize): pointer {.
   importc: "realloc", header: "<stdlib.h>".}
 
+proc c_fwrite(buf: pointer, size, n: csize, f: CFilePtr): cint {.
+  importc: "fwrite", header: "<stdio.h>".}
+
+proc rawWrite(f: CFilePtr, s: cstring) {.compilerproc, nonreloadable, inline.} =
+  # we cannot throw an exception here!
+  discard c_fwrite(s, 1, s.len, f)
+
 {.pop}
diff --git a/lib/system/excpt.nim b/lib/system/excpt.nim
index 551e54fae..8849caee5 100644
--- a/lib/system/excpt.nim
+++ b/lib/system/excpt.nim
@@ -17,13 +17,6 @@ var
     ## instead of `stdmsg.write` when printing stacktrace.
     ## Unstable API.
 
-proc c_fwrite(buf: pointer, size, n: csize, f: CFilePtr): cint {.
-  importc: "fwrite", header: "<stdio.h>".}
-
-proc rawWrite(f: CFilePtr, s: cstring) {.compilerproc, nonreloadable, hcrInline.} =
-  # we cannot throw an exception here!
-  discard c_fwrite(s, 1, s.len, f)
-
 when not defined(windows) or not defined(guiapp):
   proc writeToStdErr(msg: cstring) = rawWrite(cstderr, msg)
 
diff --git a/lib/system/gc_common.nim b/lib/system/gc_common.nim
index 91c0244ea..b86ef84f0 100644
--- a/lib/system/gc_common.nim
+++ b/lib/system/gc_common.nim
@@ -167,7 +167,6 @@ when declared(threadType):
     ## This function is available only when ``--threads:on`` and ``--tlsEmulation:off``
     ## switches are used
     if threadType == ThreadType.None:
-      initAllocator()
       var stackTop {.volatile.}: pointer
       nimGC_setStackBottom(addr(stackTop))
       initGC()
diff --git a/lib/system/mmdisp.nim b/lib/system/mmdisp.nim
index a2cddc472..905fdcc94 100644
--- a/lib/system/mmdisp.nim
+++ b/lib/system/mmdisp.nim
@@ -497,7 +497,8 @@ else:
     # XXX due to bootstrapping reasons, we cannot use  compileOption("gc", "stack") here
     include "system/gc_regions"
   elif defined(nimV2):
-    include "core/runtime_v2"
+    var allocator {.rtlThreadVar.}: MemRegion
+    instantiateForRegion(allocator)
   elif defined(gcMarkAndSweep) or defined(gcDestructors):
     # XXX use 'compileOption' here
     include "system/gc_ms"
diff --git a/lib/system/threads.nim b/lib/system/threads.nim
index 7a988db46..ec22a2b12 100644
--- a/lib/system/threads.nim
+++ b/lib/system/threads.nim
@@ -456,8 +456,6 @@ template threadProcWrapperBody(closure: untyped): untyped =
   var thrd = cast[ptr Thread[TArg]](closure)
   var core = thrd.core
   when declared(globalsSlot): threadVarSetValue(globalsSlot, thrd.core)
-  when declared(initAllocator):
-    initAllocator()
   threadProcWrapStackFrame(thrd)
   # Since an unhandled exception terminates the whole process (!), there is
   # no need for a ``try finally`` here, nor would it be correct: The current