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, 8 insertions, 8 deletions

diff --git a/nixos/modules/services/monitoring/zabbix-agent.nix b/nixos/modules/services/monitoring/zabbix-agent.nix
index c48b973f1ef..f2a8adace69 100644
--- a/nixos/modules/services/monitoring/zabbix-agent.nix
+++ b/nixos/modules/services/monitoring/zabbix-agent.nix
@@ -35,7 +35,7 @@ in
         type = types.package;
         default = pkgs.zabbix.agent;
         defaultText = literalExpression "pkgs.zabbix.agent";
-        description = "The Zabbix package to use.";
+        description = lib.mdDoc "The Zabbix package to use.";
       };
 
       extraPackages = mkOption {
@@ -51,7 +51,7 @@ in
 
       modules = mkOption {
         type = types.attrsOf types.package;
-        description = "A set of modules to load.";
+        description = lib.mdDoc "A set of modules to load.";
         default = {};
         example = literalExpression ''
           {
@@ -71,7 +71,7 @@ in
 
       server = mkOption {
         type = types.str;
-        description = ''
+        description = lib.mdDoc ''
           The IP address or hostname of the Zabbix server to connect to.
         '';
       };
@@ -80,7 +80,7 @@ in
         ip = mkOption {
           type = types.str;
           default = "0.0.0.0";
-          description = ''
+          description = lib.mdDoc ''
             List of comma delimited IP addresses that the agent should listen on.
           '';
         };
@@ -88,7 +88,7 @@ in
         port = mkOption {
           type = types.port;
           default = 10050;
-          description = ''
+          description = lib.mdDoc ''
             Agent will listen on this port for connections from the server.
           '';
         };
@@ -97,7 +97,7 @@ in
       openFirewall = mkOption {
         type = types.bool;
         default = false;
-        description = ''
+        description = lib.mdDoc ''
           Open ports in the firewall for the Zabbix Agent.
         '';
       };
@@ -105,9 +105,9 @@ in
       settings = mkOption {
         type = with types; attrsOf (oneOf [ int str (listOf str) ]);
         default = {};
-        description = ''
+        description = lib.mdDoc ''
           Zabbix Agent configuration. Refer to
-          <link xlink:href="https://www.zabbix.com/documentation/current/manual/appendix/config/zabbix_agentd"/>
+          <https://www.zabbix.com/documentation/current/manual/appendix/config/zabbix_agentd>
           for details on supported values.
         '';
         example = {