Futhark: Automatic C imports in Nim using libclang

[PMunch]

Have your eyes set on the perfect C library for your project? Can't find a 
wrapper for it in Nim? Look no further! Futhark aims to allow you to simply 
import C header files directly into Nim, and allow you to use them like you 
would from C without any manual intervention. It's still in an alpha state, but 
it can already wrap many complex header files without any rewrites or 
pre-processing.
    
    
    import futhark
    
    # Tell futhark where to find the C libraries you will compile with, and what
    # header files you wish to import.
    importc:
      absPath "/usr/lib/clang/12.0.1/include"
      path "../stb"
      define STB_IMAGE_IMPLEMENTATION
      "stb_image.h"
    
    # Tell Nim how to compile against the library. If you have a dynamic library
    # this would simply be a `--passL:"-l<library name>`
    static:
      writeFile("test.c", """
      #define STB_IMAGE_IMPLEMENTATION
      #include "../stb/stb_image.h"
      """)
    {.compile: "test.c".}
    
    # Use the library just like you would in C!
    var width, height, channels: cint
    
    var image = stbi_load("futhark.png", width.addr, height.addr, 
channels.addr, STBI_default.cint)
    if image == nil:
      echo "Error in loading the image"
      quit 1
    
    echo "Loaded image with a width of ", width, ", a height of ", height, " 
and ", channels, " channels"
    stbi_image_free(image)
    
    
    Run

This is a project I've been working on for the past couple weeks. It allows you 
to import C files directly in Nim code and just use all procedures and 
structures without any modification. It aims to bridge the gap between Nim and 
C and allow you to use any library without having to create any wrappers!