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, 12 insertions, 12 deletions

diff --git a/nixos/modules/config/xdg/mime.nix b/nixos/modules/config/xdg/mime.nix
index 9b6dd4cab5f5..3aa863083219 100644
--- a/nixos/modules/config/xdg/mime.nix
+++ b/nixos/modules/config/xdg/mime.nix
@@ -18,10 +18,10 @@ in
     xdg.mime.enable = mkOption {
       type = types.bool;
       default = true;
-      description = ''
+      description = lib.mdDoc ''
         Whether to install files to support the
-        <link xlink:href="https://specifications.freedesktop.org/shared-mime-info-spec/shared-mime-info-spec-latest.html">XDG Shared MIME-info specification</link> and the
-        <link xlink:href="https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-latest.html">XDG MIME Applications specification</link>.
+        [XDG Shared MIME-info specification](https://specifications.freedesktop.org/shared-mime-info-spec/shared-mime-info-spec-latest.html) and the
+        [XDG MIME Applications specification](https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-latest.html).
       '';
     };
 
@@ -32,10 +32,10 @@ in
         "application/pdf" = "firefox.desktop";
         "text/xml" = [ "nvim.desktop" "codium.desktop" ];
       };
-      description = ''
+      description = lib.mdDoc ''
         Adds associations between mimetypes and applications. See the
-        <link xlink:href="https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-latest.html#associations">
-        specifications</link> for more information.
+        [
+        specifications](https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-latest.html#associations) for more information.
       '';
     };
 
@@ -46,10 +46,10 @@ in
         "application/pdf" = "firefox.desktop";
         "image/png" = [ "sxiv.desktop" "gimp.desktop" ];
       };
-      description = ''
+      description = lib.mdDoc ''
         Sets the default applications for given mimetypes. See the
-        <link xlink:href="https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-latest.html#default">
-        specifications</link> for more information.
+        [
+        specifications](https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-latest.html#default) for more information.
       '';
     };
 
@@ -60,10 +60,10 @@ in
         "audio/mp3" = [ "mpv.desktop" "umpv.desktop" ];
         "inode/directory" = "codium.desktop";
       };
-      description = ''
+      description = lib.mdDoc ''
         Removes associations between mimetypes and applications. See the
-        <link xlink:href="https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-latest.html#associations">
-        specifications</link> for more information.
+        [
+        specifications](https://specifications.freedesktop.org/mime-apps-spec/mime-apps-spec-latest.html#associations) for more information.
       '';
     };
   };