treewide: automatically md-convert option descriptions

the conversion procedure is simple:

 - find all things that look like options, ie calls to either `mkOption`
   or `lib.mkOption` that take an attrset. remember the attrset as the
   option
 - for all options, find a `description` attribute who's value is not a
   call to `mdDoc` or `lib.mdDoc`
 - textually convert the entire value of the attribute to MD with a few
   simple regexes (the set from mdize-module.sh)
 - if the change produced a change in the manual output, discard
 - if the change kept the manual unchanged, add some text to the
   description to make sure we've actually found an option. if the
   manual changes this time, keep the converted description

this procedure converts 80% of nixos options to markdown. around 2000
options remain to be inspected, but most of those fail the "does not
change the manual output check": currently the MD conversion process
does not faithfully convert docbook tags like <code> and <package>, so
any option using such tags will not be converted at all.

1 files changed, 7 insertions, 7 deletions

diff --git a/nixos/modules/programs/chromium.nix b/nixos/modules/programs/chromium.nix
index 4b8bec33eb87..98eb071e6144 100644
--- a/nixos/modules/programs/chromium.nix
+++ b/nixos/modules/programs/chromium.nix
@@ -23,14 +23,14 @@ in
 
       extensions = mkOption {
         type = types.listOf types.str;
-        description = ''
+        description = lib.mdDoc ''
           List of chromium extensions to install.
           For list of plugins ids see id in url of extensions on
-          <link xlink:href="https://chrome.google.com/webstore/category/extensions">chrome web store</link>
+          [chrome web store](https://chrome.google.com/webstore/category/extensions)
           page. To install a chromium extension not included in the chrome web
           store, append to the extension id a semicolon ";" followed by a URL
           pointing to an Update Manifest XML file. See
-          <link xlink:href="https://cloud.google.com/docs/chrome-enterprise/policies/?policy=ExtensionInstallForcelist">ExtensionInstallForcelist</link>
+          [ExtensionInstallForcelist](https://cloud.google.com/docs/chrome-enterprise/policies/?policy=ExtensionInstallForcelist)
           for additional details.
         '';
         default = [];
@@ -46,21 +46,21 @@ in
 
       homepageLocation = mkOption {
         type = types.nullOr types.str;
-        description = "Chromium default homepage";
+        description = lib.mdDoc "Chromium default homepage";
         default = null;
         example = "https://nixos.org";
       };
 
       defaultSearchProviderEnabled = mkOption {
         type = types.nullOr types.bool;
-        description = "Enable the default search provider.";
+        description = lib.mdDoc "Enable the default search provider.";
         default = null;
         example = true;
       };
 
       defaultSearchProviderSearchURL = mkOption {
         type = types.nullOr types.str;
-        description = "Chromium default search provider url.";
+        description = lib.mdDoc "Chromium default search provider url.";
         default = null;
         example =
           "https://encrypted.google.com/search?q={searchTerms}&{google:RLZ}{google:originalQueryForSuggestion}{google:assistedQueryStats}{google:searchFieldtrialParameter}{google:searchClient}{google:sourceId}{google:instantExtendedEnabledParameter}ie={inputEncoding}";
@@ -68,7 +68,7 @@ in
 
       defaultSearchProviderSuggestURL = mkOption {
         type = types.nullOr types.str;
-        description = "Chromium default search provider url for suggestions.";
+        description = lib.mdDoc "Chromium default search provider url for suggestions.";
         default = null;
         example =
           "https://encrypted.google.com/complete/search?output=chrome&q={searchTerms}";