anchor.diff:  , python
   
   , glib
  -, glib_networking
  +, glib-networking
   , gobject-introspection
   , libxml2
   , sqlite
  +, vala
   }:
   
   with {
  
positive.code: 
    buildInputs = [
      glib
      glib_networking
      gobject-introspection
      libxml2
      sqlite
    ];
  
    postPatch = ''
  
negative.code: 
  stdenv.mkDerivation rec {
    name = "libsoup-${version}";
    versionMajor = "2.54";
    versionMinor = "0";
    version = "${versionMajor}.${versionMinor}";
  
    src = fetchurl {
      url = "mirror://gnome/sources/libsoup/${versionMajor}/${name}.tar.xz";
      sha256 = "fbf1038efb10d2ffbbb88bb46e7ce32b683fde8e566f36bcf26f7f69a550ec56";
    };
  
    nativeBuildInputs = [
  