Workaround for code reordering in nimterop?

[berquist]

I'm trying to use nimterop to generate some bindings to my system installation 
of <https://apr.apache.org>/ (which I need to bind against Subversion), and was 
running into <https://github.com/nimterop/nimterop/issues/206>. I don't 
understand this comment:

> Since it is imported and not included like cImport() has to, reordering will 
> work as expected.

Running `nim c src/genwrapper.nim` on this file doesn't work, and neither does 
`import wrap` on another file:
    
    
    import nimterop/[cimport, build, paths]
    
    cIncludeDir("/usr/include/apr-1")
    
    cPlugin:
      import strutils
      
      proc onSymbol*(sym: var Symbol) {.exportc, dynlib.} =
        sym.name = sym.name.strip(chars = {'_'})
        sym.name = sym.name.replace("__", "_")
        
        if sym.name == "APR_NO_FILE":
          sym.name = "APR_NO_FILE_DEF"
    
    cImport(
      @[
        "/usr/include/apr-1/apr.h"
      ],
      recurse = true, nimfile = "wrap.nim")
    
    Run

Both fail with
    
    
    Error: undeclared identifier: 'apr_size_t'

since one of the constants uses `apr_size_t` which comes before the type 
definition. What's the correct strategy here?