# Pastebin sYQo4DvS
import macros

macro createStringConstNimNode(constName: string, constVal: string): typed =
  result = newNimNode(nnkConstDef)
  result.add(newIdentNode(constName))
  result.add(newIdentNode("string"))
  result.add(newStrLitNode(constVal))

macro tester(): typed =
  result = newNimNode(nnkStmtList)
  let constSection = newNimNode(nnkConstSection)
  constSection.add(createStringConstNimNode("TestConst", "Hello, World!"))
  result.add(constSection)

tester()
echo TestConst