anchor.diff:            "--sysconfdir=${confDir}"
             "--enable-gc"
           ]
  +        ++ lib.optional (!enableDocumentation) "--disable-doc-gen"
           ++ lib.optionals (!is24) [
             # option was removed in 2.4
             "--disable-init-state"
  
positive.code:         license = lib.licenses.lgpl2Plus;
          maintainers = [ lib.maintainers.eelco ];
          platforms = lib.platforms.unix;
          outputsToInstall = [ "out" "man" ];
        };
  
        passthru = {
  
negative.code: 
        VERSION_SUFFIX = suffix;
  
        outputs =
          [ "out" "dev" ]
          ++ lib.optionals enableDocumentation [ "man" "doc" ];
  
        nativeBuildInputs =
          [ pkg-config ]
          ++ lib.optionals stdenv.isLinux [ util-linuxMinimal ]
          ++ lib.optionals (is24 && enableDocumentation) [
            (lib.getBin lowdown) mdbook
          ]
          ++ lib.optionals is24
            [ autoreconfHook
              autoconf-archive
              bison flex
              jq
             ];
  
  