Using header and dynlib pragmas together results in bad codegen

[genotrance]

proc test() {.header: "test.h", dynlib: "test.so".}

test()

On compiling with nim (tried versions devel to 0.17.0).

Hint: used config file 'nim.cfg' [Conf]
Hint: system [Processing]
Hint: a [Processing]
CC: a
Error: execution of an external compiler program 'gcc -c  -w  -Inim-0.20.2/lib -o nimcache/a.o nimcache/a.c' failed with exit code: 1

nimcache/a.c:11:10: fatal error: test.so: No such file or directory
 #include "test.so"
          ^~~~~~~~~
compilation terminated.

Nim is using the dynlib value for #include in the generated C instead of the header.