anchor.diff: -{ lib, stdenv, fetchFromGitLab, fetchpatch, pkg-config, meson, ninja
  +{ lib, stdenv, fetchFromGitLab, pkg-config, meson, ninja
   , git, criterion, gtk3, libconfig, gnuplot, opencv, json-glib
   , fftwFloat, cfitsio, gsl, exiv2, librtprocess, wcslib, ffmpeg
   , libraw, libtiff, libpng, libjpeg, libheif, ffms, wrapGAppsHook
  
positive.code:     homepage = "https://www.siril.org/";
      description = "Astrophotographic image processing tool";
      license = licenses.gpl3Plus;
      maintainers = with maintainers; [ hjones2199 ];
      platforms = [ "x86_64-linux" ];
    };
  }
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "siril";
    version = "0.99.10.1";
  
    src = fetchFromGitLab {
      owner = "free-astro";
      repo = pname;
      rev = version;
      sha256 = "sha256-gqV+pJNaU+GnYiUo/imofgNdeM+AtDg/pSH7aoqhkYA=";
    };
  
    nativeBuildInputs = [
      meson ninja pkg-config git criterion wrapGAppsHook
  