{ fetchurl, rxvt_unicode }: rxvt_unicode.overrideAttrs (old: { patches = old.patches ++ [ (fetchurl { url = https://cgit.krebsco.de/rxvt-unicode/patch/?id=15f3f94; sha256 = "12vldwsds27c9l15ffc6svk9mj17jhypcz736pvpmpqbsymlkz2p"; }) ]; })