{ stdenv, fetchFromGitHub, bison, flex, openssl }: stdenv.mkDerivation rec { name = "charybdis-3.5.3"; src = fetchFromGitHub { owner = "charybdis-ircd"; repo = "charybdis"; rev = name; sha256 = "1s8p26lrc5vm08gi6hc5gqidgyj7v5bzm4d2g81v4xk387f85lnc"; }; patches = [ ./remove-setenv.patch ]; configureFlags = [ "--enable-epoll" "--enable-ipv6" "--enable-openssl=${openssl.dev}" "--with-program-prefix=charybdis-" ]; buildInputs = [ bison flex openssl ]; meta = with stdenv.lib; { description = "IRCv3 server designed to be highly scalable"; homepage = http://www.charybdis.io/; license = licenses.gpl2; maintainers = with maintainers; [ lassulus fpletz ]; platforms = platforms.unix; }; }