{ stdenv, fetchFromGitHub, pkgconfig, autoreconfHook, zimg, libass, yasm, python3, libiconv, ApplicationServices, ocrSupport ? false, tesseract, imwriSupport? true, imagemagick7 }: assert ocrSupport -> tesseract != null; assert imwriSupport -> imagemagick7 != null; with stdenv.lib; stdenv.mkDerivation rec { name = "vapoursynth-${version}"; version = "R38"; src = fetchFromGitHub { owner = "vapoursynth"; repo = "vapoursynth"; rev = version; sha256 = "0nabl6949s7awy7rnr4ck52v50xr0hwr280fyzsqixgp8w369jn0"; }; nativeBuildInputs = [ pkgconfig autoreconfHook ]; buildInputs = [ zimg libass tesseract yasm (python3.withPackages (ps: with ps; [ sphinx cython ])) ] ++ optionals stdenv.isDarwin [ libiconv ApplicationServices ] ++ optional ocrSupport tesseract ++ optional imwriSupport imagemagick7; configureFlags = [ "--disable-static" (optionalString (!ocrSupport) "--disable-ocr") (optionalString (!imwriSupport) "--disable-imwri") ]; meta = with stdenv.lib; { description = "A video processing framework with the future in mind"; homepage = http://www.vapoursynth.com/; license = licenses.lgpl21; platforms = platforms.unix; maintainers = with maintainers; [ rnhmjoj ]; }; }