asciidoc: add enableExtraPlugins expression argument

'enableExtraPlugins = true' enables all the extra plugins (filters and
backends) that are available in the expression. This simplifies the
configuration for users who want to have the fullest possible asciidoc
configuration (not needing to enable each individual plugin).

pkgs/tools/typesetting/asciidoc/default.nix

···
 , gnused ? null
 , coreutils ? null
 
+# if true, enable all the below filters and backends
+, enableExtraPlugins ? false
+
+# unzip is needed to extract filter and backend plugins
 , unzip ? null
 # filters
 , enableDitaaFilter ? false, jre ? null
···
   coreutils != null;
 
 # filters
-assert (enableDitaaFilter || enableMscgenFilter || enableDiagFilter || enableQrcodeFilter || enableAafigureFilter) -> unzip != null;
-assert enableDitaaFilter -> jre != null;
-assert enableMscgenFilter -> mscgen != null;
-assert enableDiagFilter -> blockdiag != null && seqdiag != null && actdiag != null && nwdiag != null;
-assert enableMatplotlibFilter -> matplotlib != null && numpy != null;
-assert enableAafigureFilter -> aafigure != null && recursivePthLoader != null;
+assert enableExtraPlugins || enableDitaaFilter || enableMscgenFilter || enableDiagFilter || enableQrcodeFilter || enableAafigureFilter -> unzip != null;
+assert enableExtraPlugins || enableDitaaFilter -> jre != null;
+assert enableExtraPlugins || enableMscgenFilter -> mscgen != null;
+assert enableExtraPlugins || enableDiagFilter -> blockdiag != null && seqdiag != null && actdiag != null && nwdiag != null;
+assert enableExtraPlugins || enableMatplotlibFilter -> matplotlib != null && numpy != null;
+assert enableExtraPlugins || enableAafigureFilter -> aafigure != null && recursivePthLoader != null;
 # backends
-assert (enableDeckjsBackend || enableOdfBackend) -> unzip != null;
+assert enableExtraPlugins || enableDeckjsBackend || enableOdfBackend -> unzip != null;
 
 let
 
+  _enableDitaaFilter = enableExtraPlugins || enableDitaaFilter;
+  _enableMscgenFilter = enableExtraPlugins || enableMscgenFilter;
+  _enableDiagFilter = enableExtraPlugins || enableDiagFilter;
+  _enableQrcodeFilter = enableExtraPlugins || enableQrcodeFilter;
+  _enableMatplotlibFilter = enableExtraPlugins || enableMatplotlibFilter;
+  _enableAafigureFilter = enableExtraPlugins || enableAafigureFilter;
+  _enableDeckjsBackend = enableExtraPlugins || enableDeckjsBackend;
+  _enableOdfBackend = enableExtraPlugins || enableOdfBackend;
+
   #
   # filters
   #
···
   patchPhase = with stdenv.lib; ''
     mkdir -p "$out/etc/asciidoc/filters"
     mkdir -p "$out/etc/asciidoc/backends"
-  '' + optionalString enableDitaaFilter ''
+  '' + optionalString _enableDitaaFilter ''
     echo "Extracting ditaa filter"
     unzip -d "$out/etc/asciidoc/filters/ditaa" "${ditaaFilterSrc}"
     sed -i -e "s|java -jar|${jre}/bin/java -jar|" \
         "$out/etc/asciidoc/filters/ditaa/ditaa2img.py"
-  '' + optionalString enableMscgenFilter ''
+  '' + optionalString _enableMscgenFilter ''
     echo "Extracting mscgen filter"
     unzip -d "$out/etc/asciidoc/filters/mscgen" "${mscgenFilterSrc}"
     sed -i -e "s|filter-wrapper.py mscgen|filter-wrapper.py ${mscgen}/bin/mscgen|" \
         "$out/etc/asciidoc/filters/mscgen/mscgen-filter.conf"
-  '' + optionalString enableDiagFilter ''
+  '' + optionalString _enableDiagFilter ''
     echo "Extracting diag filter"
     unzip -d "$out/etc/asciidoc/filters/diag" "${diagFilterSrc}"
     sed -i \
···
         -e "s|filter='nwdiag|filter=\'${nwdiag}/bin/nwdiag|" \
         -e "s|filter='packetdiag|filter=\'${nwdiag}/bin/packetdiag|" \
         "$out/etc/asciidoc/filters/diag/diag-filter.conf"
-  '' + optionalString enableQrcodeFilter ''
+  '' + optionalString _enableQrcodeFilter ''
     echo "Extracting qrcode filter"
     unzip -d "$out/etc/asciidoc/filters/qrcode" "${qrcodeFilterSrc}"
     sed -i -e "s|systemcmd('qrencode|systemcmd('${qrencode}/bin/qrencode|" \
         "$out/etc/asciidoc/filters/qrcode/qrcode2img.py"
-  '' + optionalString enableMatplotlibFilter ''
+  '' + optionalString _enableMatplotlibFilter ''
     echo "Extracting mpl (matplotlib) filter"
     mkdir -p "$out/etc/asciidoc/filters/mpl"
     tar xvf "${matplotlibFilterSrc}" -C "$out/etc/asciidoc/filters/mpl" --strip-components=1
···
     numpy_path="$(toPythonPath ${numpy})"
     sed -i "/^import.*sys/asys.path.append(\"$matplotlib_path\"); sys.path.append(\"$numpy_path\");" \
         "$out/etc/asciidoc/filters/mpl/mplw.py"
-  '' + optionalString enableAafigureFilter ''
+  '' + optionalString _enableAafigureFilter ''
     echo "Extracting aafigure filter"
     unzip -d "$out/etc/asciidoc/filters/aafigure" "${aafigureFilterSrc}"
     # Add aafigure to sys.path (and it needs recursive-pth-loader)
···
     aafigure_path="$(toPythonPath ${aafigure})"
     sed -i "/^import.*sys/asys.path.append(\"$pth_loader_path\"); sys.path.append(\"$aafigure_path\"); import sitecustomize" \
         "$out/etc/asciidoc/filters/aafigure/aafig2img.py"
-  '' + optionalString enableDeckjsBackend ''
+  '' + optionalString _enableDeckjsBackend ''
     echo "Extracting deckjs backend"
     unzip -d "$out/etc/asciidoc/backends/deckjs" "${deckjsBackendSrc}"
-  '' + optionalString enableOdfBackend ''
+  '' + optionalString _enableOdfBackend ''
     echo "Extracting odf backend (odt + odp)"
     unzip -d "$out/etc/asciidoc/backends/odt" "${odtBackendSrc}"
     unzip -d "$out/etc/asciidoc/backends/odp" "${odpBackendSrc}"