I realise this is already documented in the haddock, so I think of making
argpos work with non String arguments as a feature request.

What steps will reproduce the problem?
1. ./argpos-int Flag --i 3
2. ./argpos-int ArgPos 3

What is the expected output? What do you see instead?
I expect: ArgPos {i = 3}
I see: ArgPos {i = 0}

What version of the product are you using? On what operating system?
(Saying "latest" is fine, especially for Hoogle web search)
latest

Please provide any additional information below.
This is within on attempt to apply cmdargs to
http://www.mlesniak.com/haskell/gettings-things-done-in-haskell/

argpos-int.hs 319 bytes   Download