Returning tuple literal in proc with tuple return type gives compiler error

[ho0ber]

Returning a tuple literal or a constructed tuple from a proc gives Error: no tuple type for constructor at compile time.

Example

proc two_numbers(): tuple =
  return (1,2)

echo two_numbers()

Current Output

Hint: used config file '/usr/local/Cellar/nim/1.4.8/nim/config/nim.cfg' [Conf]
Hint: used config file '/usr/local/Cellar/nim/1.4.8/nim/config/config.nims' [Conf]
....
/Users/scolburn/two_numbers.nim(4, 17) template/generic instantiation of `two_numbers` from here
/Users/scolburn/two_numbers.nim(2, 10) Error: no tuple type for constructor

I was unable to compile nim from git head to test with that, sorry.

Expected Output

(1, 2)

Possible Solution

Unknown; I'm a Nim beginner.

Additional Information

Workarounds for now:

proc two_numbers(): auto =
  return (1,2)

echo two_numbers()

proc two_numbers(): tuple =
  let x = (1,2)
  return x

echo two_numbers()

$ nim -v
Nim Compiler Version 1.4.8 [MacOSX: amd64]
Compiled at 2021-05-25
Copyright (c) 2006-2021 by Andreas Rumpf

active boot switches: -d:release -d:nimUseLinenoise