{ stdenv, fetchurl, libxml2 , compressionSupport ? true, zlib ? null , sslSupport ? true, openssl ? null }: assert compressionSupport -> zlib != null; assert sslSupport -> openssl != null; (stdenv.mkDerivation { name = "neon-0.26.1"; src = fetchurl { url = http://www.webdav.org/neon/neon-0.26.1.tar.gz; md5 = "3bb7a82bddfc1c56d2f9dba849aecd1f"; }; buildInputs = [libxml2] ++ (if compressionSupport then [zlib] else []); configureFlags=" --enable-shared --disable-static ${if compressionSupport then "--with-zlib" else "--without-zlib"} ${if sslSupport then "--with-ssl --with-libs=${openssl}" else "--without-ssl"} "; }) // {inherit compressionSupport sslSupport;}