anchor.diff:    mesonFlags = [
       "-Dgtk_doc=true"
     ];
  -
  -  postPatch = ''
  -    chmod +x meson_post_install.py
  -    patchShebangs meson_post_install.py
  -  '';
   
     postFixup = ''
       # Cannot be in postInstall, otherwise _multioutDocs hook in preFixup will move right back.
  
positive.code: , glib
  , atk
  , gobject-introspection
  , wrapGAppsHook
  }:
  
  stdenv.mkDerivation rec {
    pname = "ghex";
    version = "4.beta.1";
  
    outputs = [ "out" "dev" "devdoc" ];
  
    src = fetchurl {
      url = "mirror://gnome/sources/ghex/${version}/${pname}-${version}.tar.xz";
      sha256 = "sBS/9cY++uHLGCbLeex8ZW697JJn3dK+HaM6tHBdwJ4=";
    };
  
    patches = [
      # Fix build with -Werror=format-security
      (fetchpatch {
        url = "https://gitlab.gnome.org/GNOME/ghex/-/commit/3d35359f3a12b6abb4a3d8a12a0f39b7221be408.patch";
        sha256 = "4z9nUd+/eBOUGwl3MErse+FKLzGqtWKwkIzej57CnYk=";
      })
      # Build devhelp index.
      # https://gitlab.gnome.org/GNOME/ghex/-/merge_requests/25
      (fetchpatch {
        url = "https://gitlab.gnome.org/GNOME/ghex/-/commit/b26a7b1135ea2fe956a9bc0669b3b6ed818716c3.patch";
        sha256 = "nYjjxds9GNWkW/RhXEe5zJzPF4TnLMsCELEqYR4dXTk=";
      })
    ];
  
    nativeBuildInputs = [
      desktop-file-utils
  
negative.code: { stdenv
  , lib
  , fetchurl
  , pkg-config
  , gi-docgen
  , meson
  , ninja
  , gnome
  , desktop-file-utils
  , appstream-glib
  