wxc-0.90.0.3 fails to compile using ghc-7.4.1 on Debian testing.
I could get it to install by installing wx 2.9, and then wxc install would
fail with eljpen.cpp not compiling. I had to change line 159 to
*_ref = ((const char* const*)NULL);
from
*_ref = NULL;
After that it just installed.
Just stumbled across this issue with Arch Linux too. Will try your fix, thanks!
The fix worked for me; thanks again.