anchor.diff:  
     doCheck = false; # hangs. or very expensive?
   
  -  meta = {
  +  meta = with lib; {
       description = "Linkable library implementation of Git that you can use in your application";
       homepage = "https://libgit2.org/";
  -    license = lib.licenses.gpl2Plus;
  -    platforms = lib.platforms.all;
  -    maintainers = with lib.maintainers; [ ];
  +    license = licenses.gpl2Plus;
  +    platforms = platforms.all;
  +    maintainers = with maintainers; [ SuperSandro2000 ];
     };
   }
  
positive.code: { lib
  , stdenv
  , fetchFromGitHub
  , fetchpatch
  , cmake
  , pkg-config
  , python3
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "libgit2";
    version = "1.4.3";
    # also check the following packages for updates: python3.pkgs.pygit2 and libgit2-glib
  
    src = fetchFromGitHub {
      owner = "libgit2";
      repo = "libgit2";
      rev = "v${version}";
      sha256 = "sha256-WnRzH5uMVEStA5ns4GNgMD5YoLQoats9aPLfnz9RoQs=";
    };
  
    cmakeFlags = [
      "-DTHREADSAFE=ON"
  