anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gnome-builder";
  -  version = "42.alpha1";
  +  version = "42.beta1";
   
     outputs = [ "out" "devdoc" ];
   
     src = fetchurl {
       url = "mirror://gnome/sources/${pname}/${lib.versions.major version}/${pname}-${version}.tar.xz";
  -    sha256 = "AtJ+Op2ChWWgcREWFb3zqyp1CzBb/469BwJXK3DuWnc=";
  +    sha256 = "cEgZ7J/W7Mb6S489mFsCEs+hZWlhAMzalGGPiBKzKio=";
     };
  -
  -  patches = [
  -    # Fix building docs
  -    # https://gitlab.gnome.org/GNOME/gnome-builder/-/merge_requests/530
  -    (fetchpatch {
  -      url = "https://gitlab.gnome.org/GNOME/gnome-builder/-/commit/e2b369ec056ff43701803c5e5185fa2ac391d238.patch";
  -      sha256 = "OI2CMtA0M9u6/5xmWm4i+bXOKDXmtYprCONNCU2aOj0=";
  -    })
  -  ];
   
     nativeBuildInputs = [
       appstream-glib
  
positive.code: , json-glib
  , jsonrpc-glib
  , libdazzle
  , libpeas
  , libportal-gtk3
  , libxml2
  
negative.code: , cmark
  , appstream-glib
  , desktop-file-utils
  , fetchurl
  , flatpak
  , gnome
  