nixos/lib, doc: remove references to mdDoc (#300738)

* doc: remove references to mdDoc in nixos/doc/manual/development/option-declarations.section.md

* nixos/lib: remove mdDoc in nixos/lib/make-options-doc/default.nix

* nixos/lib: remove mdDoc in nixos/lib/systemd-types.nix

* nixos/lib: remove mdDoc in nixos/lib/systemd-unit-options.nix

* nixos/lib: remove mdDoc in nixos/lib/testing/driver.nix

* nixos/lib: remove mdDoc in nixos/lib/testing/interactive.nix

* nixos/lib: remove mdDoc in nixos/lib/testing/meta.nix

* nixos/lib: remove mdDoc in nixos/lib/testing/name.nix

* nixos/lib: remove mdDoc in nixos/lib/testing/network.nix

* nixos/lib: remove mdDoc in nixos/lib/testing/nodes.nix

* nixos/lib: remove mdDoc in nixos/lib/testing/run.nix

* nixos/lib: remove mdDoc in nixos/lib/testing/testScript.nix

11 files changed, 94 insertions, 100 deletions

diff --git a/nixos/lib/make-options-doc/default.nix b/nixos/lib/make-options-doc/default.nix
index 4ae9d018e96f5..17e03baf3bb75 100644
--- a/nixos/lib/make-options-doc/default.nix
+++ b/nixos/lib/make-options-doc/default.nix
@@ -117,9 +117,7 @@
 # deprecated since 23.11.
 # TODO remove in a while.
 , allowDocBook ? false
-# whether lib.mdDoc is required for descriptions to be read as markdown.
-# deprecated since 23.11.
-# TODO remove in a while.
+# TODO remove in a while (see https://github.com/NixOS/nixpkgs/issues/300735)
 , markdownByDefault ? true
 }:
 
diff --git a/nixos/lib/systemd-types.nix b/nixos/lib/systemd-types.nix
index ba8bed35e1c05..c4c5771cff822 100644
--- a/nixos/lib/systemd-types.nix
+++ b/nixos/lib/systemd-types.nix
@@ -31,7 +31,6 @@ let
     ;
 
   inherit (lib)
-    mdDoc
     mkDefault
     mkDerivedConfig
     mkEnableOption
@@ -81,11 +80,11 @@ rec {
 
   initrdContents = attrsOf (submodule ({ config, options, name, ... }: {
     options = {
-      enable = mkEnableOption (mdDoc "copying of this file and symlinking it") // { default = true; };
+      enable = (mkEnableOption "copying of this file and symlinking it") // { default = true; };
 
       target = mkOption {
         type = path;
-        description = mdDoc ''
+        description = ''
           Path of the symlink.
         '';
         default = name;
@@ -94,12 +93,12 @@ rec {
       text = mkOption {
         default = null;
         type = nullOr lines;
-        description = mdDoc "Text of the file.";
+        description = "Text of the file.";
       };
 
       source = mkOption {
         type = path;
-        description = mdDoc "Path of the source file.";
+        description = "Path of the source file.";
       };
     };
 
diff --git a/nixos/lib/systemd-unit-options.nix b/nixos/lib/systemd-unit-options.nix
index db644e0065521..fc990a87f0c20 100644
--- a/nixos/lib/systemd-unit-options.nix
+++ b/nixos/lib/systemd-unit-options.nix
@@ -17,7 +17,6 @@ let
     concatMap
     filterOverrides
     isList
-    mdDoc
     mergeEqualOption
     mkIf
     mkMerge
@@ -55,7 +54,7 @@ in rec {
     enable = mkOption {
       default = true;
       type = types.bool;
-      description = mdDoc ''
+      description = ''
         If set to false, this unit will be a symlink to
         /dev/null. This is primarily useful to prevent specific
         template instances
@@ -69,7 +68,7 @@ in rec {
     overrideStrategy = mkOption {
       default = "asDropinIfExists";
       type = types.enum [ "asDropinIfExists" "asDropin" ];
-      description = mdDoc ''
+      description = ''
         Defines how unit configuration is provided for systemd:
 
         `asDropinIfExists` creates a unit file when no unit file is provided by the package
@@ -85,7 +84,7 @@ in rec {
     requiredBy = mkOption {
       default = [];
       type = types.listOf unitNameType;
-      description = mdDoc ''
+      description = ''
         Units that require (i.e. depend on and need to go down with) this unit.
         As discussed in the `wantedBy` option description this also creates
         `.requires` symlinks automatically.
@@ -95,7 +94,7 @@ in rec {
     upheldBy = mkOption {
       default = [];
       type = types.listOf unitNameType;
-      description = mdDoc ''
+      description = ''
         Keep this unit running as long as the listed units are running. This is a continuously
         enforced version of wantedBy.
       '';
@@ -104,7 +103,7 @@ in rec {
     wantedBy = mkOption {
       default = [];
       type = types.listOf unitNameType;
-      description = mdDoc ''
+      description = ''
         Units that want (i.e. depend on) this unit. The default method for
         starting a unit by default at boot time is to set this option to
         `["multi-user.target"]` for system services. Likewise for user units
@@ -122,7 +121,7 @@ in rec {
     aliases = mkOption {
       default = [];
       type = types.listOf unitNameType;
-      description = mdDoc "Aliases of that unit.";
+      description = "Aliases of that unit.";
     };
 
   };
@@ -132,12 +131,12 @@ in rec {
     text = mkOption {
       type = types.nullOr types.str;
       default = null;
-      description = mdDoc "Text of this systemd unit.";
+      description = "Text of this systemd unit.";
     };
 
     unit = mkOption {
       internal = true;
-      description = mdDoc "The generated unit.";
+      description = "The generated unit.";
     };
 
   };
@@ -148,19 +147,19 @@ in rec {
       description = mkOption {
         default = "";
         type = types.singleLineStr;
-        description = mdDoc "Description of this unit used in systemd messages and progress indicators.";
+        description = "Description of this unit used in systemd messages and progress indicators.";
       };
 
       documentation = mkOption {
         default = [];
         type = types.listOf types.str;
-        description = mdDoc "A list of URIs referencing documentation for this unit or its configuration.";
+        description = "A list of URIs referencing documentation for this unit or its configuration.";
       };
 
       requires = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           Start the specified units when this unit is started, and stop
           this unit when the specified units are stopped or fail.
         '';
@@ -169,7 +168,7 @@ in rec {
       wants = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           Start the specified units when this unit is started.
         '';
       };
@@ -177,7 +176,7 @@ in rec {
       upholds = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           Keeps the specified running while this unit is running. A continuous version of `wants`.
         '';
       };
@@ -185,7 +184,7 @@ in rec {
       after = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           If the specified units are started at the same time as
           this unit, delay this unit until they have started.
         '';
@@ -194,7 +193,7 @@ in rec {
       before = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           If the specified units are started at the same time as
           this unit, delay them until this unit has started.
         '';
@@ -203,7 +202,7 @@ in rec {
       bindsTo = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           Like ‘requires’, but in addition, if the specified units
           unexpectedly disappear, this unit will be stopped as well.
         '';
@@ -212,7 +211,7 @@ in rec {
       partOf = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           If the specified units are stopped or restarted, then this
           unit is stopped or restarted as well.
         '';
@@ -221,7 +220,7 @@ in rec {
       conflicts = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           If the specified units are started, then this unit is stopped
           and vice versa.
         '';
@@ -230,7 +229,7 @@ in rec {
       requisite = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           Similar to requires. However if the units listed are not started,
           they will not be started and the transaction will fail.
         '';
@@ -240,7 +239,7 @@ in rec {
         default = {};
         example = { RequiresMountsFor = "/data"; };
         type = types.attrsOf unitOption;
-        description = mdDoc ''
+        description = ''
           Each attribute in this set specifies an option in the
           `[Unit]` section of the unit.  See
           {manpage}`systemd.unit(5)` for details.
@@ -250,7 +249,7 @@ in rec {
       onFailure = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           A list of one or more units that are activated when
           this unit enters the "failed" state.
         '';
@@ -259,7 +258,7 @@ in rec {
       onSuccess = mkOption {
         default = [];
         type = types.listOf unitNameType;
-        description = mdDoc ''
+        description = ''
           A list of one or more units that are activated when
           this unit enters the "inactive" state.
         '';
@@ -267,7 +266,7 @@ in rec {
 
       startLimitBurst = mkOption {
          type = types.int;
-         description = mdDoc ''
+         description = ''
            Configure unit start rate limiting. Units which are started
            more than startLimitBurst times within an interval time
            interval are not permitted to start any more.
@@ -276,7 +275,7 @@ in rec {
 
       startLimitIntervalSec = mkOption {
          type = types.int;
-         description = mdDoc ''
+         description = ''
            Configure unit start rate limiting. Units which are started
            more than startLimitBurst times within an interval time
            interval are not permitted to start any more.
@@ -295,7 +294,7 @@ in rec {
       restartTriggers = mkOption {
         default = [];
         type = types.listOf types.unspecified;
-        description = mdDoc ''
+        description = ''
           An arbitrary list of items such as derivations.  If any item
           in the list changes between reconfigurations, the service will
           be restarted.
@@ -305,7 +304,7 @@ in rec {
       reloadTriggers = mkOption {
         default = [];
         type = types.listOf unitOption;
-        description = mdDoc ''
+        description = ''
           An arbitrary list of items such as derivations.  If any item
           in the list changes between reconfigurations, the service will
           be reloaded.  If anything but a reload trigger changes in the
@@ -323,13 +322,13 @@ in rec {
         default = {};
         type = with types; attrsOf (nullOr (oneOf [ str path package ]));
         example = { PATH = "/foo/bar/bin"; LANG = "nl_NL.UTF-8"; };
-        description = mdDoc "Environment variables passed to the service's processes.";
+        description = "Environment variables passed to the service's processes.";
       };
 
       path = mkOption {
         default = [];
         type = with types; listOf (oneOf [ package str ]);
-        description = mdDoc ''
+        description = ''
           Packages added to the service's {env}`PATH`
           environment variable.  Both the {file}`bin`
           and {file}`sbin` subdirectories of each
@@ -343,7 +342,7 @@ in rec {
           { RestartSec = 5;
           };
         type = types.addCheck (types.attrsOf unitOption) checkService;
-        description = mdDoc ''
+        description = ''
           Each attribute in this set specifies an option in the
           `[Service]` section of the unit.  See
           {manpage}`systemd.service(5)` for details.
@@ -353,14 +352,14 @@ in rec {
       script = mkOption {
         type = types.lines;
         default = "";
-        description = mdDoc "Shell commands executed as the service's main process.";
+        description = "Shell commands executed as the service's main process.";
       };
 
       scriptArgs = mkOption {
         type = types.str;
         default = "";
         example = "%i";
-        description = mdDoc ''
+        description = ''
           Arguments passed to the main process script.
           Can contain specifiers (`%` placeholders expanded by systemd, see {manpage}`systemd.unit(5)`).
         '';
@@ -369,7 +368,7 @@ in rec {
       preStart = mkOption {
         type = types.lines;
         default = "";
-        description = mdDoc ''
+        description = ''
           Shell commands executed before the service's main process
           is started.
         '';
@@ -378,7 +377,7 @@ in rec {
       postStart = mkOption {
         type = types.lines;
         default = "";
-        description = mdDoc ''
+        description = ''
           Shell commands executed after the service's main process
           is started.
         '';
@@ -387,7 +386,7 @@ in rec {
       reload = mkOption {
         type = types.lines;
         default = "";
-        description = mdDoc ''
+        description = ''
           Shell commands executed when the service's main process
           is reloaded.
         '';
@@ -396,7 +395,7 @@ in rec {
       preStop = mkOption {
         type = types.lines;
         default = "";
-        description = mdDoc ''
+        description = ''
           Shell commands executed to stop the service.
         '';
       };
@@ -404,7 +403,7 @@ in rec {
       postStop = mkOption {
         type = types.lines;
         default = "";
-        description = mdDoc ''
+        description = ''
           Shell commands executed after the service's main process
           has exited.
         '';
@@ -413,7 +412,7 @@ in rec {
       jobScripts = mkOption {
         type = with types; coercedTo path singleton (listOf path);
         internal = true;
-        description = mdDoc "A list of all job script derivations of this unit.";
+        description = "A list of all job script derivations of this unit.";
         default = [];
       };
 
@@ -458,7 +457,7 @@ in rec {
       restartIfChanged = mkOption {
         type = types.bool;
         default = true;
-        description = mdDoc ''
+        description = ''
           Whether the service should be restarted during a NixOS
           configuration switch if its definition has changed.
         '';
@@ -467,7 +466,7 @@ in rec {
       reloadIfChanged = mkOption {
         type = types.bool;
         default = false;
-        description = mdDoc ''
+        description = ''
           Whether the service should be reloaded during a NixOS
           configuration switch if its definition has changed.  If
           enabled, the value of {option}`restartIfChanged` is
@@ -483,7 +482,7 @@ in rec {
       stopIfChanged = mkOption {
         type = types.bool;
         default = true;
-        description = mdDoc ''
+        description = ''
           If set, a changed unit is restarted by calling
           {command}`systemctl stop` in the old configuration,
           then {command}`systemctl start` in the new one.
@@ -499,7 +498,7 @@ in rec {
         type = with types; either str (listOf str);
         default = [];
         example = "Sun 14:00:00";
-        description = mdDoc ''
+        description = ''
           Automatically start this unit at the given date/time, which
           must be in the format described in
           {manpage}`systemd.time(7)`.  This is equivalent
@@ -526,7 +525,7 @@ in rec {
         default = [];
         type = types.listOf types.str;
         example = [ "0.0.0.0:993" "/run/my-socket" ];
-        description = mdDoc ''
+        description = ''
           For each item in this list, a `ListenStream`
           option in the `[Socket]` section will be created.
         '';
@@ -536,7 +535,7 @@ in rec {
         default = [];
         type = types.listOf types.str;
         example = [ "0.0.0.0:993" "/run/my-socket" ];
-        description = mdDoc ''
+        description = ''
           For each item in this list, a `ListenDatagram`
           option in the `[Socket]` section will be created.
         '';
@@ -546,7 +545,7 @@ in rec {
         default = {};
         example = { ListenStream = "/run/my-socket"; };
         type = types.attrsOf unitOption;
-        description = mdDoc ''
+        description = ''
           Each attribute in this set specifies an option in the
           `[Socket]` section of the unit.  See
           {manpage}`systemd.socket(5)` for details.
@@ -578,7 +577,7 @@ in rec {
         default = {};
         example = { OnCalendar = "Sun 14:00:00"; Unit = "foo.service"; };
         type = types.attrsOf unitOption;
-        description = mdDoc ''
+        description = ''
           Each attribute in this set specifies an option in the
           `[Timer]` section of the unit.  See
           {manpage}`systemd.timer(5)` and
@@ -611,7 +610,7 @@ in rec {
         default = {};
         example = { PathChanged = "/some/path"; Unit = "changedpath.service"; };
         type = types.attrsOf unitOption;
-        description = mdDoc ''
+        description = ''
           Each attribute in this set specifies an option in the
           `[Path]` section of the unit.  See
           {manpage}`systemd.path(5)` for details.
@@ -642,13 +641,13 @@ in rec {
       what = mkOption {
         example = "/dev/sda1";
         type = types.str;
-        description = mdDoc "Absolute path of device node, file or other resource. (Mandatory)";
+        description = "Absolute path of device node, file or other resource. (Mandatory)";
       };
 
       where = mkOption {
         example = "/mnt";
         type = types.str;
-        description = mdDoc ''
+        description = ''
           Absolute path of a directory of the mount point.
           Will be created if it doesn't exist. (Mandatory)
         '';
@@ -658,21 +657,21 @@ in rec {
         default = "";
         example = "ext4";
         type = types.str;
-        description = mdDoc "File system type.";
+        description = "File system type.";
       };
 
       options = mkOption {
         default = "";
         example = "noatime";
         type = types.commas;
-        description = mdDoc "Options used to mount the file system.";
+        description = "Options used to mount the file system.";
       };
 
       mountConfig = mkOption {
         default = {};
         example = { DirectoryMode = "0775"; };
         type = types.attrsOf unitOption;
-        description = mdDoc ''
+        description = ''
           Each attribute in this set specifies an option in the
           `[Mount]` section of the unit.  See
           {manpage}`systemd.mount(5)` for details.
@@ -702,7 +701,7 @@ in rec {
       where = mkOption {
         example = "/mnt";
         type = types.str;
-        description = mdDoc ''
+        description = ''
           Absolute path of a directory of the mount point.
           Will be created if it doesn't exist. (Mandatory)
         '';
@@ -712,7 +711,7 @@ in rec {
         default = {};
         example = { DirectoryMode = "0775"; };
         type = types.attrsOf unitOption;
-        description = mdDoc ''
+        description = ''
           Each attribute in this set specifies an option in the
           `[Automount]` section of the unit.  See
           {manpage}`systemd.automount(5)` for details.
@@ -743,7 +742,7 @@ in rec {
         default = {};
         example = { MemoryMax = "2G"; };
         type = types.attrsOf unitOption;
-        description = mdDoc ''
+        description = ''
           Each attribute in this set specifies an option in the
           `[Slice]` section of the unit.  See
           {manpage}`systemd.slice(5)` for details.
diff --git a/nixos/lib/testing/driver.nix b/nixos/lib/testing/driver.nix
index b6f01c38191d2..7eb06e023918b 100644
--- a/nixos/lib/testing/driver.nix
+++ b/nixos/lib/testing/driver.nix
@@ -1,6 +1,6 @@
 { config, lib, hostPkgs, ... }:
 let
-  inherit (lib) mkOption types literalMD mdDoc;
+  inherit (lib) mkOption types literalMD;
 
   # Reifies and correctly wraps the python test driver for
   # the respective qemu version and with or without ocr support
@@ -104,13 +104,13 @@ in
   options = {
 
     driver = mkOption {
-      description = mdDoc "Package containing a script that runs the test.";
+      description = "Package containing a script that runs the test.";
       type = types.package;
       defaultText = literalMD "set by the test framework";
     };
 
     hostPkgs = mkOption {
-      description = mdDoc "Nixpkgs attrset used outside the nodes.";
+      description = "Nixpkgs attrset used outside the nodes.";
       type = types.raw;
       example = lib.literalExpression ''
         import nixpkgs { inherit system config overlays; }
@@ -118,14 +118,14 @@ in
     };
 
     qemu.package = mkOption {
-      description = mdDoc "Which qemu package to use for the virtualisation of [{option}`nodes`](#test-opt-nodes).";
+      description = "Which qemu package to use for the virtualisation of [{option}`nodes`](#test-opt-nodes).";
       type = types.package;
       default = hostPkgs.qemu_test;
       defaultText = "hostPkgs.qemu_test";
     };
 
     globalTimeout = mkOption {
-      description = mdDoc ''
+      description = ''
         A global timeout for the complete test, expressed in seconds.
         Beyond that timeout, every resource will be killed and released and the test will fail.
 
@@ -137,7 +137,7 @@ in
     };
 
     enableOCR = mkOption {
-      description = mdDoc ''
+      description = ''
         Whether to enable Optical Character Recognition functionality for
         testing graphical programs. See [Machine objects](`ssec-machine-objects`).
       '';
@@ -146,7 +146,7 @@ in
     };
 
     extraPythonPackages = mkOption {
-      description = mdDoc ''
+      description = ''
         Python packages to add to the test driver.
 
         The argument is a Python package set, similar to `pkgs.pythonPackages`.
@@ -159,7 +159,7 @@ in
     };
 
     extraDriverArgs = mkOption {
-      description = mdDoc ''
+      description = ''
         Extra arguments to pass to the test driver.
 
         They become part of [{option}`driver`](#test-opt-driver) via `wrapProgram`.
@@ -171,7 +171,7 @@ in
     skipLint = mkOption {
       type = types.bool;
       default = false;
-      description = mdDoc ''
+      description = ''
         Do not run the linters. This may speed up your iteration cycle, but it is not something you should commit.
       '';
     };
@@ -179,7 +179,7 @@ in
     skipTypeCheck = mkOption {
       type = types.bool;
       default = false;
-      description = mdDoc ''
+      description = ''
         Disable type checking. This must not be enabled for new NixOS tests.
 
         This may speed up your iteration cycle, unless you're working on the [{option}`testScript`](#test-opt-testScript).
diff --git a/nixos/lib/testing/interactive.nix b/nixos/lib/testing/interactive.nix
index 317ed4241882b..0b12096692828 100644
--- a/nixos/lib/testing/interactive.nix
+++ b/nixos/lib/testing/interactive.nix
@@ -1,11 +1,11 @@
 { config, lib, moduleType, hostPkgs, ... }:
 let
-  inherit (lib) mkOption types mdDoc;
+  inherit (lib) mkOption types;
 in
 {
   options = {
     interactive = mkOption {
-      description = mdDoc ''
+      description = ''
         Tests [can be run interactively](#sec-running-nixos-tests-interactively)
         using the program in the test derivation's `.driverInteractive` attribute.
 
diff --git a/nixos/lib/testing/meta.nix b/nixos/lib/testing/meta.nix
index 805b7520edff3..8d053ce86d888 100644
--- a/nixos/lib/testing/meta.nix
+++ b/nixos/lib/testing/meta.nix
@@ -1,11 +1,11 @@
 { lib, ... }:
 let
-  inherit (lib) types mkOption mdDoc;
+  inherit (lib) types mkOption;
 in
 {
   options = {
     meta = lib.mkOption {
-      description = mdDoc ''
+      description = ''
         The [`meta`](https://nixos.org/manual/nixpkgs/stable/#chap-meta) attributes that will be set on the returned derivations.
 
         Not all [`meta`](https://nixos.org/manual/nixpkgs/stable/#chap-meta) attributes are supported, but more can be added as desired.
@@ -16,21 +16,21 @@ in
           maintainers = lib.mkOption {
             type = types.listOf types.raw;
             default = [];
-            description = mdDoc ''
+            description = ''
               The [list of maintainers](https://nixos.org/manual/nixpkgs/stable/#var-meta-maintainers) for this test.
             '';
           };
           timeout = lib.mkOption {
             type = types.nullOr types.int;
             default = 3600;  # 1 hour
-            description = mdDoc ''
+            description = ''
               The [{option}`test`](#test-opt-test)'s [`meta.timeout`](https://nixos.org/manual/nixpkgs/stable/#var-meta-timeout) in seconds.
             '';
           };
           broken = lib.mkOption {
             type = types.bool;
             default = false;
-            description = mdDoc ''
+            description = ''
               Sets the [`meta.broken`](https://nixos.org/manual/nixpkgs/stable/#var-meta-broken) attribute on the [{option}`test`](#test-opt-test) derivation.
             '';
           };
diff --git a/nixos/lib/testing/name.nix b/nixos/lib/testing/name.nix
index 0af593169eeca..0682873c7bcd0 100644
--- a/nixos/lib/testing/name.nix
+++ b/nixos/lib/testing/name.nix
@@ -1,10 +1,10 @@
 { lib, ... }:
 let
-  inherit (lib) mkOption types mdDoc;
+  inherit (lib) mkOption types;
 in
 {
   options.name = mkOption {
-    description = mdDoc ''
+    description = ''
       The name of the test.
 
       This is used in the derivation names of the [{option}`driver`](#test-opt-driver) and [{option}`test`](#test-opt-test) runner.
diff --git a/nixos/lib/testing/network.nix b/nixos/lib/testing/network.nix
index 1edc9e276530c..0f1615a0ad3b9 100644
--- a/nixos/lib/testing/network.nix
+++ b/nixos/lib/testing/network.nix
@@ -5,7 +5,6 @@ let
     attrNames concatMap concatMapStrings flip forEach head
     listToAttrs mkDefault mkOption nameValuePair optionalString
     range toLower types zipListsWith zipLists
-    mdDoc
     ;
 
   nodeNumbers =
@@ -89,7 +88,7 @@ let
         default = name;
         # We need to force this in specilisations, otherwise it'd be
         # readOnly = true;
-        description = mdDoc ''
+        description = ''
           The `name` in `nodes.<name>`; stable across `specialisations`.
         '';
       };
@@ -98,7 +97,7 @@ let
         type = types.int;
         readOnly = true;
         default = nodeNumbers.${config.virtualisation.test.nodeName};
-        description = mdDoc ''
+        description = ''
           A unique number assigned for each node in `nodes`.
         '';
       };
diff --git a/nixos/lib/testing/nodes.nix b/nixos/lib/testing/nodes.nix
index 7941d69e38d2b..9aecca10ac6b2 100644
--- a/nixos/lib/testing/nodes.nix
+++ b/nixos/lib/testing/nodes.nix
@@ -5,7 +5,6 @@ let
     literalExpression
     literalMD
     mapAttrs
-    mdDoc
     mkDefault
     mkIf
     mkOption mkForce
@@ -76,7 +75,7 @@ in
     nodes = mkOption {
       type = types.lazyAttrsOf config.node.type;
       visible = "shallow";
-      description = mdDoc ''
+      description = ''
         An attribute set of NixOS configuration modules.
 
         The configurations are augmented by the [`defaults`](#test-opt-defaults) option.
@@ -88,7 +87,7 @@ in
     };
 
     defaults = mkOption {
-      description = mdDoc ''
+      description = ''
         NixOS configuration that is applied to all [{option}`nodes`](#test-opt-nodes).
       '';
       type = types.deferredModule;
@@ -96,7 +95,7 @@ in
     };
 
     extraBaseModules = mkOption {
-      description = mdDoc ''
+      description = ''
         NixOS configuration that, like [{option}`defaults`](#test-opt-defaults), is applied to all [{option}`nodes`](#test-opt-nodes) and can not be undone with [`specialisation.<name>.inheritParentConfig`](https://search.nixos.org/options?show=specialisation.%3Cname%3E.inheritParentConfig&from=0&size=50&sort=relevance&type=packages&query=specialisation).
       '';
       type = types.deferredModule;
@@ -104,7 +103,7 @@ in
     };
 
     node.pkgs = mkOption {
-      description = mdDoc ''
+      description = ''
         The Nixpkgs to use for the nodes.
 
         Setting this will make the `nixpkgs.*` options read-only, to avoid mistakenly testing with a Nixpkgs configuration that diverges from regular use.
@@ -117,7 +116,7 @@ in
     };
 
     node.pkgsReadOnly = mkOption {
-      description = mdDoc ''
+      description = ''
         Whether to make the `nixpkgs.*` options read-only. This is only relevant when [`node.pkgs`](#test-opt-node.pkgs) is set.
 
         Set this to `false` when any of the [`nodes`](#test-opt-nodes) needs to configure any of the `nixpkgs.*` options. This will slow down evaluation of your test a bit.
@@ -130,7 +129,7 @@ in
     node.specialArgs = mkOption {
       type = types.lazyAttrsOf types.raw;
       default = { };
-      description = mdDoc ''
+      description = ''
         An attribute set of arbitrary values that will be made available as module arguments during the resolution of module `imports`.
 
         Note that it is not possible to override these from within the NixOS configurations. If you argument is not relevant to `imports`, consider setting {option}`defaults._module.args.<name>` instead.
@@ -139,7 +138,7 @@ in
 
     nodesCompat = mkOption {
       internal = true;
-      description = mdDoc ''
+      description = ''
         Basically `_module.args.nodes`, but with backcompat and warnings added.
 
         This will go away.
diff --git a/nixos/lib/testing/run.nix b/nixos/lib/testing/run.nix
index de5a9b97e61d5..218292121ee77 100644
--- a/nixos/lib/testing/run.nix
+++ b/nixos/lib/testing/run.nix
@@ -1,12 +1,12 @@
 { config, hostPkgs, lib, ... }:
 let
-  inherit (lib) types mkOption mdDoc;
+  inherit (lib) types mkOption;
 in
 {
   options = {
     passthru = mkOption {
       type = types.lazyAttrsOf types.raw;
-      description = mdDoc ''
+      description = ''
         Attributes to add to the returned derivations,
         which are not necessarily part of the build.
 
@@ -18,7 +18,7 @@ in
 
     rawTestDerivation = mkOption {
       type = types.package;
-      description = mdDoc ''
+      description = ''
         Unfiltered version of `test`, for troubleshooting the test framework and `testBuildFailure` in the test framework's test suite.
         This is not intended for general use. Use `test` instead.
       '';
@@ -28,7 +28,7 @@ in
     test = mkOption {
       type = types.package;
       # TODO: can the interactive driver be configured to access the network?
-      description = mdDoc ''
+      description = ''
         Derivation that runs the test as its "build" process.
 
         This implies that NixOS tests run isolated from the network, making them
diff --git a/nixos/lib/testing/testScript.nix b/nixos/lib/testing/testScript.nix
index 5c36d754d79d7..09964777bd924 100644
--- a/nixos/lib/testing/testScript.nix
+++ b/nixos/lib/testing/testScript.nix
@@ -1,13 +1,13 @@
 testModuleArgs@{ config, lib, hostPkgs, nodes, moduleType, ... }:
 let
-  inherit (lib) mkOption types mdDoc;
+  inherit (lib) mkOption types;
   inherit (types) either str functionTo;
 in
 {
   options = {
     testScript = mkOption {
       type = either str (functionTo str);
-      description = mdDoc ''
+      description = ''
         A series of python declarations and statements that you write to perform
         the test.
       '';
@@ -25,7 +25,7 @@ in
     };
     withoutTestScriptReferences = mkOption {
       type = moduleType;
-      description = mdDoc ''
+      description = ''
         A parallel universe where the testScript is invalid and has no references.
       '';
       internal = true;