currentSourcePath not returning the correct module name

[ghost]

Slightly modifying the sample code from documentation:

# simple.nim
import strutils

template testException*(exception, code: typed): untyped =
  try:
    let pos = currentSourcePath()
    discard(code)
    echo "Test failure at $1 with '$2'" % [pos, astToStr(code)]
    assert false, "A test expecting failure succeeded?"
  except exception:
    discard

# bug.nim
import simple

proc tester(pos: int): int =
  let
    a = @[1, 2, 3]
  result = a[pos]

when isMainModule:
  testException(IndexError, tester(30))
  testException(IndexError, tester(1))
  # --> Test failure at simple.nim with 'tester(1)'

One would expect to get the name of the module that is "main" not the imported one.

[ghost]

Replacing currentSourcePath with instantiationInfo(-1, true).filename fixes it.