{ stdenv, fetchurl }: let arch = if stdenv.isx86_64 then "x86-64" else if stdenv.isi686 then "x86-32" else "unknown"; version = "11"; in stdenv.mkDerivation { pname = "stockfish"; inherit version; src = fetchurl { url = "https://github.com/official-stockfish/Stockfish/archive/sf_${version}.tar.gz"; sha256 = "16di83s79gf9kzdhcal5y0q9d59544gd5xqf1k8bwrqvc36628l0"; }; postUnpack = "sourceRoot+=/src"; makeFlags = [ "PREFIX=$(out)" "ARCH=${arch}" ]; buildFlags = [ "build" ]; enableParallelBuilding = true; meta = with stdenv.lib; { homepage = https://stockfishchess.org/; description = "Strong open source chess engine"; longDescription = '' Stockfish is one of the strongest chess engines in the world. It is also much stronger than the best human chess grandmasters. ''; maintainers = with maintainers; [ luispedro peti ]; platforms = ["x86_64-linux" "i686-linux"]; license = licenses.gpl2; }; }