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, 16 insertions, 16 deletions

diff --git a/nixos/modules/services/blockchain/ethereum/geth.nix b/nixos/modules/services/blockchain/ethereum/geth.nix
index bf2cf1edd4d8d..4f045acd95688 100644
--- a/nixos/modules/services/blockchain/ethereum/geth.nix
+++ b/nixos/modules/services/blockchain/ethereum/geth.nix
@@ -14,7 +14,7 @@ let
       port = mkOption {
         type = types.port;
         default = 30303;
-        description = "Port number Go Ethereum will be listening on, both TCP and UDP.";
+        description = lib.mdDoc "Port number Go Ethereum will be listening on, both TCP and UDP.";
       };
 
       http = {
@@ -22,19 +22,19 @@ let
         address = mkOption {
           type = types.str;
           default = "127.0.0.1";
-          description = "Listen address of Go Ethereum HTTP API.";
+          description = lib.mdDoc "Listen address of Go Ethereum HTTP API.";
         };
 
         port = mkOption {
           type = types.port;
           default = 8545;
-          description = "Port number of Go Ethereum HTTP API.";
+          description = lib.mdDoc "Port number of Go Ethereum HTTP API.";
         };
 
         apis = mkOption {
           type = types.nullOr (types.listOf types.str);
           default = null;
-          description = "APIs to enable over WebSocket";
+          description = lib.mdDoc "APIs to enable over WebSocket";
           example = ["net" "eth"];
         };
       };
@@ -44,19 +44,19 @@ let
         address = mkOption {
           type = types.str;
           default = "127.0.0.1";
-          description = "Listen address of Go Ethereum WebSocket API.";
+          description = lib.mdDoc "Listen address of Go Ethereum WebSocket API.";
         };
 
         port = mkOption {
           type = types.port;
           default = 8546;
-          description = "Port number of Go Ethereum WebSocket API.";
+          description = lib.mdDoc "Port number of Go Ethereum WebSocket API.";
         };
 
         apis = mkOption {
           type = types.nullOr (types.listOf types.str);
           default = null;
-          description = "APIs to enable over WebSocket";
+          description = lib.mdDoc "APIs to enable over WebSocket";
           example = ["net" "eth"];
         };
       };
@@ -66,43 +66,43 @@ let
         address = mkOption {
           type = types.str;
           default = "127.0.0.1";
-          description = "Listen address of Go Ethereum metrics service.";
+          description = lib.mdDoc "Listen address of Go Ethereum metrics service.";
         };
 
         port = mkOption {
           type = types.port;
           default = 6060;
-          description = "Port number of Go Ethereum metrics service.";
+          description = lib.mdDoc "Port number of Go Ethereum metrics service.";
         };
       };
 
       network = mkOption {
         type = types.nullOr (types.enum [ "goerli" "rinkeby" "yolov2" "ropsten" ]);
         default = null;
-        description = "The network to connect to. Mainnet (null) is the default ethereum network.";
+        description = lib.mdDoc "The network to connect to. Mainnet (null) is the default ethereum network.";
       };
 
       syncmode = mkOption {
         type = types.enum [ "snap" "fast" "full" "light" ];
         default = "snap";
-        description = "Blockchain sync mode.";
+        description = lib.mdDoc "Blockchain sync mode.";
       };
 
       gcmode = mkOption {
         type = types.enum [ "full" "archive" ];
         default = "full";
-        description = "Blockchain garbage collection mode.";
+        description = lib.mdDoc "Blockchain garbage collection mode.";
       };
 
       maxpeers = mkOption {
         type = types.int;
         default = 50;
-        description = "Maximum peers to connect to.";
+        description = lib.mdDoc "Maximum peers to connect to.";
       };
 
       extraArgs = mkOption {
         type = types.listOf types.str;
-        description = "Additional arguments passed to Go Ethereum.";
+        description = lib.mdDoc "Additional arguments passed to Go Ethereum.";
         default = [];
       };
 
@@ -110,7 +110,7 @@ let
         default = pkgs.go-ethereum.geth;
         defaultText = literalExpression "pkgs.go-ethereum.geth";
         type = types.package;
-        description = "Package to use as Go Ethereum node.";
+        description = lib.mdDoc "Package to use as Go Ethereum node.";
       };
     };
   };
@@ -124,7 +124,7 @@ in
     services.geth = mkOption {
       type = types.attrsOf (types.submodule gethOpts);
       default = {};
-      description = "Specification of one or more geth instances.";
+      description = lib.mdDoc "Specification of one or more geth instances.";
     };
   };