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, 9 insertions, 9 deletions

diff --git a/nixos/modules/services/networking/bind.nix b/nixos/modules/services/networking/bind.nix
index 2045612ec05..0966332f7d0 100644
--- a/nixos/modules/services/networking/bind.nix
+++ b/nixos/modules/services/networking/bind.nix
@@ -17,28 +17,28 @@ let
       name = mkOption {
         type = types.str;
         default = name;
-        description = "Name of the zone.";
+        description = lib.mdDoc "Name of the zone.";
       };
       master = mkOption {
-        description = "Master=false means slave server";
+        description = lib.mdDoc "Master=false means slave server";
         type = types.bool;
       };
       file = mkOption {
         type = types.either types.str types.path;
-        description = "Zone file resource records contain columns of data, separated by whitespace, that define the record.";
+        description = lib.mdDoc "Zone file resource records contain columns of data, separated by whitespace, that define the record.";
       };
       masters = mkOption {
         type = types.listOf types.str;
-        description = "List of servers for inclusion in stub and secondary zones.";
+        description = lib.mdDoc "List of servers for inclusion in stub and secondary zones.";
       };
       slaves = mkOption {
         type = types.listOf types.str;
-        description = "Addresses who may request zone transfers.";
+        description = lib.mdDoc "Addresses who may request zone transfers.";
         default = [ ];
       };
       extraConfig = mkOption {
         type = types.str;
-        description = "Extra zone config to be appended at the end of the zone section.";
+        description = lib.mdDoc "Extra zone config to be appended at the end of the zone section.";
         default = "";
       };
     };
@@ -111,7 +111,7 @@ in
         type = types.package;
         default = pkgs.bind;
         defaultText = literalExpression "pkgs.bind";
-        description = "The BIND package to use.";
+        description = lib.mdDoc "The BIND package to use.";
       };
 
       cacheNetworks = mkOption {
@@ -178,7 +178,7 @@ in
       directory = mkOption {
         type = types.str;
         default = "/run/named";
-        description = "Working directory of BIND.";
+        description = lib.mdDoc "Working directory of BIND.";
       };
 
       zones = mkOption {
@@ -209,7 +209,7 @@ in
       extraOptions = mkOption {
         type = types.lines;
         default = "";
-        description = ''
+        description = lib.mdDoc ''
           Extra lines to be added verbatim to the options section of the
           generated named configuration file.
         '';