{ stdenv, fetchurl, libxml2 , compressionSupport ? true, zlib ? null , sslSupport ? true, openssl ? null }: assert compressionSupport -> zlib != null; assert sslSupport -> openssl != null; stdenv.mkDerivation { name = "neon-0.28.2"; src = fetchurl { url = http://www.webdav.org/neon/neon-0.28.2.tar.gz; sha256 = "154hzy2xa8a1dfdrjcggkik6dhpq1f5r1q2masrgysnv2cb61kfr"; }; buildInputs = [libxml2] ++ stdenv.lib.optional compressionSupport zlib; configureFlags = '' --enable-shared --disable-static ${if compressionSupport then "--with-zlib" else "--without-zlib"} ${if sslSupport then "--with-ssl --with-libs=${openssl}" else "--without-ssl"} ''; passthru = {inherit compressionSupport sslSupport;}; meta = { description = "An HTTP and WebDAV client library"; homepage = http://www.webdav.org/neon/; }; }