{ stdenv, fetchurl , zlibSupport ? true, zlib ? null , sslSupport ? true, openssl ? null , idnSupport ? true, libidn ? null }: assert zlibSupport -> zlib != null; assert sslSupport -> openssl != null; assert idnSupport -> libidn != null; with stdenv.lib; let version = "1.0.20"; in stdenv.mkDerivation rec { name = "gloox-${version}"; src = fetchurl { url = "http://camaya.net/download/gloox-${version}.tar.bz2"; sha256 = "1a6yhs42wcdm8az3983m3lx4d9296bw0amz5v3b4012g1xn0hhq2"; }; buildInputs = [ ] ++ optional zlibSupport zlib ++ optional sslSupport openssl ++ optional idnSupport libidn; meta = { description = "A portable high-level Jabber/XMPP library for C++"; homepage = http://camaya.net/gloox; license = licenses.gpl3; maintainers = with maintainers; [ fuuzetsu ]; platforms = platforms.unix; }; }