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-rw-r--r--nixos/modules/config/console.nix4
-rw-r--r--nixos/modules/config/debug-info.nix19
-rw-r--r--nixos/modules/hardware/device-tree.nix18
-rw-r--r--nixos/modules/misc/documentation.nix31
-rw-r--r--nixos/modules/misc/man-db.nix8
-rw-r--r--nixos/modules/module-list.nix1
-rw-r--r--nixos/modules/programs/clickshare.nix21
-rw-r--r--nixos/modules/security/systemd-confinement.nix11
-rw-r--r--nixos/modules/services/audio/navidrome.nix2
-rw-r--r--nixos/modules/services/desktops/pipewire/wireplumber.nix15
-rw-r--r--nixos/modules/services/matrix/synapse.nix18
-rw-r--r--nixos/modules/services/monitoring/grafana-agent.nix25
-rw-r--r--nixos/modules/services/monitoring/prometheus/exporters/postfix.nix2
-rw-r--r--nixos/modules/services/networking/mosquitto.nix40
-rw-r--r--nixos/modules/services/networking/syncthing.nix108
-rw-r--r--nixos/modules/tasks/network-interfaces-systemd.nix25
-rw-r--r--nixos/modules/virtualisation/xen-dom0.nix6
17 files changed, 159 insertions, 195 deletions
diff --git a/nixos/modules/config/console.nix b/nixos/modules/config/console.nix
index b60fc55851daf..97e6405db91e1 100644
--- a/nixos/modules/config/console.nix
+++ b/nixos/modules/config/console.nix
@@ -46,9 +46,9 @@ in
       type = with types; either str path;
       default = "Lat2-Terminus16";
       example = "LatArCyrHeb-16";
-      description = ''
+      description = mdDoc ''
         The font used for the virtual consoles.  Leave empty to use
-        whatever the <command>setfont</command> program considers the
+        whatever the {command}`setfont` program considers the
         default font.
         Can be either a font name or a path to a PSF font file.
       '';
diff --git a/nixos/modules/config/debug-info.nix b/nixos/modules/config/debug-info.nix
index 2942ae5905d10..78de26fda4403 100644
--- a/nixos/modules/config/debug-info.nix
+++ b/nixos/modules/config/debug-info.nix
@@ -9,21 +9,20 @@ with lib;
     environment.enableDebugInfo = mkOption {
       type = types.bool;
       default = false;
-      description = ''
+      description = mdDoc ''
         Some NixOS packages provide debug symbols. However, these are
         not included in the system closure by default to save disk
         space. Enabling this option causes the debug symbols to appear
-        in <filename>/run/current-system/sw/lib/debug/.build-id</filename>,
-        where tools such as <command>gdb</command> can find them.
+        in {file}`/run/current-system/sw/lib/debug/.build-id`,
+        where tools such as {command}`gdb` can find them.
         If you need debug symbols for a package that doesn't
         provide them by default, you can enable them as follows:
-        <programlisting>
-        nixpkgs.config.packageOverrides = pkgs: {
-          hello = pkgs.hello.overrideAttrs (oldAttrs: {
-            separateDebugInfo = true;
-          });
-        };
-        </programlisting>
+
+            nixpkgs.config.packageOverrides = pkgs: {
+              hello = pkgs.hello.overrideAttrs (oldAttrs: {
+                separateDebugInfo = true;
+              });
+            };
       '';
     };
 
diff --git a/nixos/modules/hardware/device-tree.nix b/nixos/modules/hardware/device-tree.nix
index be67116ad507d..5a8a8e27bee1b 100644
--- a/nixos/modules/hardware/device-tree.nix
+++ b/nixos/modules/hardware/device-tree.nix
@@ -36,14 +36,11 @@ let
           /plugin/;
           / {
                   compatible = "raspberrypi";
-                  fragment@0 {
-                          target-path = "/soc";
-                          __overlay__ {
-                                  pps {
-                                          compatible = "pps-gpio";
-                                          status = "okay";
-                                  };
-                          };
+          };
+          &{/soc} {
+                  pps {
+                          compatible = "pps-gpio";
+                          status = "okay";
                   };
           };
         '';
@@ -88,13 +85,14 @@ let
 
   # Compile single Device Tree overlay source
   # file (.dts) into its compiled variant (.dtbo)
-  compileDTS = name: f: pkgs.callPackage({ dtc }: pkgs.stdenv.mkDerivation {
+  compileDTS = name: f: pkgs.callPackage({ stdenv, dtc }: stdenv.mkDerivation {
     name = "${name}-dtbo";
 
     nativeBuildInputs = [ dtc ];
 
     buildCommand = ''
-      dtc -I dts ${f} -O dtb -@ -o $out
+      $CC -E -nostdinc -I${getDev cfg.kernelPackage}/lib/modules/${cfg.kernelPackage.modDirVersion}/source/scripts/dtc/include-prefixes -undef -D__DTS__ -x assembler-with-cpp ${f} | \
+        dtc -I dts -O dtb -@ -o $out
     '';
   }) {};
 
diff --git a/nixos/modules/misc/documentation.nix b/nixos/modules/misc/documentation.nix
index 8e28d3336fa42..b031ff2f2be29 100644
--- a/nixos/modules/misc/documentation.nix
+++ b/nixos/modules/misc/documentation.nix
@@ -178,19 +178,12 @@ in
       man.generateCaches = mkOption {
         type = types.bool;
         default = false;
-        description = ''
+        description = mdDoc ''
           Whether to generate the manual page index caches.
           This allows searching for a page or
-          keyword using utilities like
-          <citerefentry>
-            <refentrytitle>apropos</refentrytitle>
-            <manvolnum>1</manvolnum>
-          </citerefentry>
-          and the <literal>-k</literal> option of
-          <citerefentry>
-            <refentrytitle>man</refentrytitle>
-            <manvolnum>1</manvolnum>
-          </citerefentry>.
+          keyword using utilities like {manpage}`apropos(1)`
+          and the `-k` option of
+          {manpage}`man(1)`.
         '';
       };
 
@@ -216,16 +209,14 @@ in
       dev.enable = mkOption {
         type = types.bool;
         default = false;
-        description = ''
+        description = mdDoc ''
           Whether to install documentation targeted at developers.
-          <itemizedlist>
-          <listitem><para>This includes man pages targeted at developers if <option>documentation.man.enable</option> is
-                    set (this also includes "devman" outputs).</para></listitem>
-          <listitem><para>This includes info pages targeted at developers if <option>documentation.info.enable</option>
-                    is set (this also includes "devinfo" outputs).</para></listitem>
-          <listitem><para>This includes other pages targeted at developers if <option>documentation.doc.enable</option>
-                    is set (this also includes "devdoc" outputs).</para></listitem>
-          </itemizedlist>
+          * This includes man pages targeted at developers if {option}`documentation.man.enable` is
+            set (this also includes "devman" outputs).
+          * This includes info pages targeted at developers if {option}`documentation.info.enable`
+            is set (this also includes "devinfo" outputs).
+          * This includes other pages targeted at developers if {option}`documentation.doc.enable`
+            is set (this also includes "devdoc" outputs).
         '';
       };
 
diff --git a/nixos/modules/misc/man-db.nix b/nixos/modules/misc/man-db.nix
index 8bd329bc4e0c3..7aeb02d883ac8 100644
--- a/nixos/modules/misc/man-db.nix
+++ b/nixos/modules/misc/man-db.nix
@@ -23,11 +23,11 @@ in
             ++ lib.optionals config.documentation.dev.enable [ "devman" ];
           ignoreCollisions = true;
         };
-        defaultText = lib.literalDocBook "all man pages in <option>config.environment.systemPackages</option>";
-        description = ''
-          The manual pages to generate caches for if <option>documentation.man.generateCaches</option>
+        defaultText = lib.literalMD "all man pages in {option}`config.environment.systemPackages`";
+        description = lib.mdDoc ''
+          The manual pages to generate caches for if {option}`documentation.man.generateCaches`
           is enabled. Must be a path to a directory with man pages under
-          <literal>/share/man</literal>; see the source for an example.
+          `/share/man`; see the source for an example.
           Advanced users can make this a content-addressed derivation to save a few rebuilds.
         '';
       };
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 2062b83354764..40a84730dfc1e 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -141,7 +141,6 @@
   ./programs/cdemu.nix
   ./programs/cfs-zen-tweaks.nix
   ./programs/chromium.nix
-  ./programs/clickshare.nix
   ./programs/cnping.nix
   ./programs/command-not-found/command-not-found.nix
   ./programs/criu.nix
diff --git a/nixos/modules/programs/clickshare.nix b/nixos/modules/programs/clickshare.nix
deleted file mode 100644
index 9980a7daf5254..0000000000000
--- a/nixos/modules/programs/clickshare.nix
+++ /dev/null
@@ -1,21 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-
-  options.programs.clickshare-csc1.enable =
-    lib.options.mkEnableOption ''
-      Barco ClickShare CSC-1 driver/client.
-      This allows users in the <literal>clickshare</literal>
-      group to access and use a ClickShare USB dongle
-      that is connected to the machine
-    '';
-
-  config = lib.modules.mkIf config.programs.clickshare-csc1.enable {
-    environment.systemPackages = [ pkgs.clickshare-csc1 ];
-    services.udev.packages = [ pkgs.clickshare-csc1 ];
-    users.groups.clickshare = {};
-  };
-
-  meta.maintainers = [ lib.maintainers.yarny ];
-
-}
diff --git a/nixos/modules/security/systemd-confinement.nix b/nixos/modules/security/systemd-confinement.nix
index f3a2de3bf87a0..07b725effb7d1 100644
--- a/nixos/modules/security/systemd-confinement.nix
+++ b/nixos/modules/security/systemd-confinement.nix
@@ -22,16 +22,17 @@ in {
       options.confinement.fullUnit = lib.mkOption {
         type = types.bool;
         default = false;
-        description = ''
+        description = lib.mdDoc ''
           Whether to include the full closure of the systemd unit file into the
           chroot, instead of just the dependencies for the executables.
 
-          <warning><para>While it may be tempting to just enable this option to
+          ::: {.warning}
+          While it may be tempting to just enable this option to
           make things work quickly, please be aware that this might add paths
           to the closure of the chroot that you didn't anticipate. It's better
-          to use <option>confinement.packages</option> to <emphasis
-          role="strong">explicitly</emphasis> add additional store paths to the
-          chroot.</para></warning>
+          to use {option}`confinement.packages` to **explicitly** add additional store paths to the
+          chroot.
+          :::
         '';
       };
 
diff --git a/nixos/modules/services/audio/navidrome.nix b/nixos/modules/services/audio/navidrome.nix
index 3660e05310be1..b50cb04155697 100644
--- a/nixos/modules/services/audio/navidrome.nix
+++ b/nixos/modules/services/audio/navidrome.nix
@@ -45,6 +45,8 @@ in {
         RootDirectory = "/run/navidrome";
         ReadWritePaths = "";
         BindReadOnlyPaths = [
+          # navidrome uses online services to download additional album metadata / covers
+          "${config.environment.etc."ssl/certs/ca-certificates.crt".source}:/etc/ssl/certs/ca-certificates.crt"
           builtins.storeDir
         ] ++ lib.optional (cfg.settings ? MusicFolder) cfg.settings.MusicFolder;
         CapabilityBoundingSet = "";
diff --git a/nixos/modules/services/desktops/pipewire/wireplumber.nix b/nixos/modules/services/desktops/pipewire/wireplumber.nix
index 1dbdd842c4a1e..439a3ae68daa1 100644
--- a/nixos/modules/services/desktops/pipewire/wireplumber.nix
+++ b/nixos/modules/services/desktops/pipewire/wireplumber.nix
@@ -37,11 +37,19 @@ in
     environment.systemPackages = [ cfg.package ];
 
     environment.etc."wireplumber/main.lua.d/80-nixos.lua" = lib.mkIf (!pwUsedForAudio) {
-     text = ''
+      text = ''
         -- Pipewire is not used for audio, so prevent it from grabbing audio devices
         alsa_monitor.enable = function() end
       '';
     };
+    environment.etc."wireplumber/main.lua.d/80-systemwide.lua" = lib.mkIf config.services.pipewire.systemWide {
+      text = ''
+        -- When running system-wide, these settings need to be disabled (they
+        -- use functions that aren't available on the system dbus).
+        alsa_monitor.properties["alsa.reserve"] = false
+        default_access.properties["enable-flatpak-portal"] = false
+      '';
+    };
 
     systemd.packages = [ cfg.package ];
 
@@ -50,5 +58,10 @@ in
 
     systemd.services.wireplumber.wantedBy = [ "pipewire.service" ];
     systemd.user.services.wireplumber.wantedBy = [ "pipewire.service" ];
+
+    systemd.services.wireplumber.environment = lib.mkIf config.services.pipewire.systemWide {
+      # Force wireplumber to use system dbus.
+      DBUS_SESSION_BUS_ADDRESS = "unix:path=/run/dbus/system_bus_socket";
+    };
   };
 }
diff --git a/nixos/modules/services/matrix/synapse.nix b/nixos/modules/services/matrix/synapse.nix
index b3108484fae12..3d5d10cdf070b 100644
--- a/nixos/modules/services/matrix/synapse.nix
+++ b/nixos/modules/services/matrix/synapse.nix
@@ -191,12 +191,12 @@ in {
 
       settings = mkOption {
         default = {};
-        description = ''
+        description = mdDoc ''
           The primary synapse configuration. See the
-          <link xlink:href="https://github.com/matrix-org/synapse/blob/v${cfg.package.version}/docs/sample_config.yaml">sample configuration</link>
+          [sample configuration](https://github.com/matrix-org/synapse/blob/v${cfg.package.version}/docs/sample_config.yaml)
           for possible values.
 
-          Secrets should be passed in by using the <literal>extraConfigFiles</literal> option.
+          Secrets should be passed in by using the `extraConfigFiles` option.
         '';
         type = with types; submodule {
           freeformType = format.type;
@@ -230,23 +230,23 @@ in {
             registration_shared_secret = mkOption {
               type = types.nullOr types.str;
               default = null;
-              description = ''
+              description = mdDoc ''
                 If set, allows registration by anyone who also has the shared
                 secret, even if registration is otherwise disabled.
 
-                Secrets should be passed in via <literal>extraConfigFiles</literal>!
+                Secrets should be passed in via `extraConfigFiles`!
               '';
             };
 
             macaroon_secret_key = mkOption {
               type = types.nullOr types.str;
               default = null;
-              description = ''
+              description = mdDoc ''
                 Secret key for authentication tokens. If none is specified,
                 the registration_shared_secret is used, if one is given; otherwise,
                 a secret key is derived from the signing key.
 
-                Secrets should be passed in via <literal>extraConfigFiles</literal>!
+                Secrets should be passed in via `extraConfigFiles`!
               '';
             };
 
@@ -620,10 +620,10 @@ in {
               example = literalExpression ''
                 config.services.coturn.static-auth-secret
               '';
-              description = ''
+              description = mdDoc ''
                 The shared secret used to compute passwords for the TURN server.
 
-                Secrets should be passed in via <literal>extraConfigFiles</literal>!
+                Secrets should be passed in via `extraConfigFiles`!
               '';
             };
 
diff --git a/nixos/modules/services/monitoring/grafana-agent.nix b/nixos/modules/services/monitoring/grafana-agent.nix
index 021ddaa8ee0d0..bbeda18464707 100644
--- a/nixos/modules/services/monitoring/grafana-agent.nix
+++ b/nixos/modules/services/monitoring/grafana-agent.nix
@@ -7,7 +7,7 @@ let
 in
 {
   meta = {
-    maintainers = with maintainers; [ zimbatm ];
+    maintainers = with maintainers; [ flokli zimbatm ];
   };
 
   options.services.grafana-agent = {
@@ -49,14 +49,7 @@ in
       };
 
       default = {
-        server = {
-          # Don't bind on 0.0.0.0
-          grpc_listen_address = "127.0.0.1";
-          http_listen_address = "127.0.0.1";
-          # Don't bind on the default port 80
-          http_listen_port = 9090;
-        };
-        prometheus = {
+        metrics = {
           wal_directory = "\${STATE_DIRECTORY}";
           global.scrape_interval = "5s";
         };
@@ -69,7 +62,12 @@ in
       };
 
       example = {
-        loki.configs = [{
+        metrics.global.remote_write = [{
+          url = "\${METRICS_REMOTE_WRITE_URL}";
+          basic_auth.username = "\${METRICS_REMOTE_WRITE_USERNAME}";
+          basic_auth.password_file = "\${CREDENTIALS_DIRECTORY}/metrics_remote_write_password";
+        }];
+        logs.configs = [{
           name = "default";
           scrape_configs = [
             {
@@ -101,13 +99,6 @@ in
             basic_auth.password_file = "\${CREDENTIALS_DIRECTORY}/logs_remote_write_password";
           }];
         }];
-        integrations = {
-          prometheus_remote_write = [{
-            url = "\${METRICS_REMOTE_WRITE_URL}";
-            basic_auth.username = "\${METRICS_REMOTE_WRITE_USERNAME}";
-            basic_auth.password_file = "\${CREDENTIALS_DIRECTORY}/metrics_remote_write_password";
-          }];
-        };
       };
     };
   };
diff --git a/nixos/modules/services/monitoring/prometheus/exporters/postfix.nix b/nixos/modules/services/monitoring/prometheus/exporters/postfix.nix
index 4d3c1fa267e5f..53509b7a385b4 100644
--- a/nixos/modules/services/monitoring/prometheus/exporters/postfix.nix
+++ b/nixos/modules/services/monitoring/prometheus/exporters/postfix.nix
@@ -74,11 +74,13 @@ in
     };
   };
   serviceOpts = {
+    after = mkIf cfg.systemd.enable [ cfg.systemd.unit ];
     serviceConfig = {
       DynamicUser = false;
       # By default, each prometheus exporter only gets AF_INET & AF_INET6,
       # but AF_UNIX is needed to read from the `showq`-socket.
       RestrictAddressFamilies = [ "AF_UNIX" ];
+      SupplementaryGroups = mkIf cfg.systemd.enable [ "systemd-journal" ];
       ExecStart = ''
         ${pkgs.prometheus-postfix-exporter}/bin/postfix_exporter \
           --web.listen-address ${cfg.listenAddress}:${toString cfg.port} \
diff --git a/nixos/modules/services/networking/mosquitto.nix b/nixos/modules/services/networking/mosquitto.nix
index 256d9457d3960..70c6725d1035c 100644
--- a/nixos/modules/services/networking/mosquitto.nix
+++ b/nixos/modules/services/networking/mosquitto.nix
@@ -54,10 +54,10 @@ let
       hashedPassword = mkOption {
         type = uniq (nullOr str);
         default = null;
-        description = ''
+        description = mdDoc ''
           Specifies the hashed password for the MQTT User.
-          To generate hashed password install <literal>mosquitto</literal>
-          package and use <literal>mosquitto_passwd</literal>.
+          To generate hashed password install `mosquitto`
+          package and use `mosquitto_passwd`.
         '';
       };
 
@@ -65,11 +65,11 @@ let
         type = uniq (nullOr types.path);
         example = "/path/to/file";
         default = null;
-        description = ''
+        description = mdDoc ''
           Specifies the path to a file containing the
           hashed password for the MQTT user.
-          To generate hashed password install <literal>mosquitto</literal>
-          package and use <literal>mosquitto_passwd</literal>.
+          To generate hashed password install `mosquitto`
+          package and use `mosquitto_passwd`.
         '';
       };
 
@@ -155,24 +155,24 @@ let
     options = {
       plugin = mkOption {
         type = path;
-        description = ''
-          Plugin path to load, should be a <literal>.so</literal> file.
+        description = mdDoc ''
+          Plugin path to load, should be a `.so` file.
         '';
       };
 
       denySpecialChars = mkOption {
         type = bool;
-        description = ''
-          Automatically disallow all clients using <literal>#</literal>
-          or <literal>+</literal> in their name/id.
+        description = mdDoc ''
+          Automatically disallow all clients using `#`
+          or `+` in their name/id.
         '';
         default = true;
       };
 
       options = mkOption {
         type = attrsOf optionType;
-        description = ''
-          Options for the auth plugin. Each key turns into a <literal>auth_opt_*</literal>
+        description = mdDoc ''
+          Options for the auth plugin. Each key turns into a `auth_opt_*`
            line in the config.
         '';
         default = {};
@@ -239,8 +239,8 @@ let
 
       address = mkOption {
         type = nullOr str;
-        description = ''
-          Address to listen on. Listen on <literal>0.0.0.0</literal>/<literal>::</literal>
+        description = mdDoc ''
+          Address to listen on. Listen on `0.0.0.0`/`::`
           when unset.
         '';
         default = null;
@@ -248,10 +248,10 @@ let
 
       authPlugins = mkOption {
         type = listOf authPluginOptions;
-        description = ''
+        description = mdDoc ''
           Authentication plugin to attach to this listener.
-          Refer to the <link xlink:href="https://mosquitto.org/man/mosquitto-conf-5.html">
-          mosquitto.conf documentation</link> for details on authentication plugins.
+          Refer to the [mosquitto.conf documentation](https://mosquitto.org/man/mosquitto-conf-5.html)
+          for details on authentication plugins.
         '';
         default = [];
       };
@@ -472,10 +472,10 @@ let
 
     includeDirs = mkOption {
       type = listOf path;
-      description = ''
+      description = mdDoc ''
         Directories to be scanned for further config files to include.
         Directories will processed in the order given,
-        <literal>*.conf</literal> files in the directory will be
+        `*.conf` files in the directory will be
         read in case-sensistive alphabetical order.
       '';
       default = [];
diff --git a/nixos/modules/services/networking/syncthing.nix b/nixos/modules/services/networking/syncthing.nix
index 3a3d4c80ecff4..6a90f28dc5f7b 100644
--- a/nixos/modules/services/networking/syncthing.nix
+++ b/nixos/modules/services/networking/syncthing.nix
@@ -72,39 +72,39 @@ in {
       cert = mkOption {
         type = types.nullOr types.str;
         default = null;
-        description = ''
-          Path to the <literal>cert.pem</literal> file, which will be copied into Syncthing's
-          <link linkend="opt-services.syncthing.configDir">configDir</link>.
+        description = mdDoc ''
+          Path to the `cert.pem` file, which will be copied into Syncthing's
+          [configDir](#opt-services.syncthing.configDir).
         '';
       };
 
       key = mkOption {
         type = types.nullOr types.str;
         default = null;
-        description = ''
-          Path to the <literal>key.pem</literal> file, which will be copied into Syncthing's
-          <link linkend="opt-services.syncthing.configDir">configDir</link>.
+        description = mdDoc ''
+          Path to the `key.pem` file, which will be copied into Syncthing's
+          [configDir](#opt-services.syncthing.configDir).
         '';
       };
 
       overrideDevices = mkOption {
         type = types.bool;
         default = true;
-        description = ''
+        description = mdDoc ''
           Whether to delete the devices which are not configured via the
-          <link linkend="opt-services.syncthing.devices">devices</link> option.
-          If set to <literal>false</literal>, devices added via the web
+          [devices](#opt-services.syncthing.devices) option.
+          If set to `false`, devices added via the web
           interface will persist and will have to be deleted manually.
         '';
       };
 
       devices = mkOption {
         default = {};
-        description = ''
+        description = mdDoc ''
           Peers/devices which Syncthing should communicate with.
 
           Note that you can still add devices manually, but those changes
-          will be reverted on restart if <link linkend="opt-services.syncthing.overrideDevices">overrideDevices</link>
+          will be reverted on restart if [overrideDevices](#opt-services.syncthing.overrideDevices)
           is enabled.
         '';
         example = {
@@ -135,27 +135,27 @@ in {
 
             id = mkOption {
               type = types.str;
-              description = ''
-                The device ID. See <link xlink:href="https://docs.syncthing.net/dev/device-ids.html"/>.
+              description = mdDoc ''
+                The device ID. See <https://docs.syncthing.net/dev/device-ids.html>.
               '';
             };
 
             introducer = mkOption {
               type = types.bool;
               default = false;
-              description = ''
+              description = mdDoc ''
                 Whether the device should act as an introducer and be allowed
                 to add folders on this computer.
-                See <link xlink:href="https://docs.syncthing.net/users/introducer.html"/>.
+                See <https://docs.syncthing.net/users/introducer.html>.
               '';
             };
 
             autoAcceptFolders = mkOption {
               type = types.bool;
               default = false;
-              description = ''
+              description = mdDoc ''
                 Automatically create or share folders that this device advertises at the default path.
-                See <link xlink:href="https://docs.syncthing.net/users/config.html?highlight=autoaccept#config-file-format"/>.
+                See <https://docs.syncthing.net/users/config.html?highlight=autoaccept#config-file-format>.
               '';
             };
 
@@ -166,21 +166,21 @@ in {
       overrideFolders = mkOption {
         type = types.bool;
         default = true;
-        description = ''
+        description = mdDoc ''
           Whether to delete the folders which are not configured via the
-          <link linkend="opt-services.syncthing.folders">folders</link> option.
-          If set to <literal>false</literal>, folders added via the web
+          [folders](#opt-services.syncthing.folders) option.
+          If set to `false`, folders added via the web
           interface will persist and will have to be deleted manually.
         '';
       };
 
       folders = mkOption {
         default = {};
-        description = ''
+        description = mdDoc ''
           Folders which should be shared by Syncthing.
 
           Note that you can still add devices manually, but those changes
-          will be reverted on restart if <link linkend="opt-services.syncthing.overrideDevices">overrideDevices</link>
+          will be reverted on restart if [overrideDevices](#opt-services.syncthing.overrideDevices)
           is enabled.
         '';
         example = literalExpression ''
@@ -231,18 +231,18 @@ in {
             devices = mkOption {
               type = types.listOf types.str;
               default = [];
-              description = ''
+              description = mdDoc ''
                 The devices this folder should be shared with. Each device must
-                be defined in the <link linkend="opt-services.syncthing.devices">devices</link> option.
+                be defined in the [devices](#opt-services.syncthing.devices) option.
               '';
             };
 
             versioning = mkOption {
               default = null;
-              description = ''
+              description = mdDoc ''
                 How to keep changed/deleted files with Syncthing.
                 There are 4 different types of versioning with different parameters.
-                See <link xlink:href="https://docs.syncthing.net/users/versioning.html"/>.
+                See <https://docs.syncthing.net/users/versioning.html>.
               '';
               example = literalExpression ''
                 [
@@ -284,17 +284,17 @@ in {
                 options = {
                   type = mkOption {
                     type = enum [ "external" "simple" "staggered" "trashcan" ];
-                    description = ''
+                    description = mdDoc ''
                       The type of versioning.
-                      See <link xlink:href="https://docs.syncthing.net/users/versioning.html"/>.
+                      See <https://docs.syncthing.net/users/versioning.html>.
                     '';
                   };
                   params = mkOption {
                     type = attrsOf (either str path);
-                    description = ''
+                    description = mdDoc ''
                       The parameters for versioning. Structure depends on
-                      <link linkend="opt-services.syncthing.folders._name_.versioning.type">versioning.type</link>.
-                      See <link xlink:href="https://docs.syncthing.net/users/versioning.html"/>.
+                      [versioning.type](#opt-services.syncthing.folders._name_.versioning.type).
+                      See <https://docs.syncthing.net/users/versioning.html>.
                     '';
                   };
                 };
@@ -345,9 +345,9 @@ in {
             ignoreDelete = mkOption {
               type = types.bool;
               default = false;
-              description = ''
+              description = mdDoc ''
                 Whether to skip deleting files that are deleted by peers.
-                See <link xlink:href="https://docs.syncthing.net/advanced/folder-ignoredelete.html"/>.
+                See <https://docs.syncthing.net/advanced/folder-ignoredelete.html>.
               '';
             };
           };
@@ -357,9 +357,9 @@ in {
       extraOptions = mkOption {
         type = types.addCheck (pkgs.formats.json {}).type isAttrs;
         default = {};
-        description = ''
+        description = mdDoc ''
           Extra configuration options for Syncthing.
-          See <link xlink:href="https://docs.syncthing.net/users/config.html"/>.
+          See <https://docs.syncthing.net/users/config.html>.
         '';
         example = {
           options.localAnnounceEnabled = false;
@@ -387,9 +387,9 @@ in {
         type = types.str;
         default = defaultUser;
         example = "yourUser";
-        description = ''
+        description = mdDoc ''
           The user to run Syncthing as.
-          By default, a user named <literal>${defaultUser}</literal> will be created.
+          By default, a user named `${defaultUser}` will be created.
         '';
       };
 
@@ -397,9 +397,9 @@ in {
         type = types.str;
         default = defaultGroup;
         example = "yourGroup";
-        description = ''
+        description = mdDoc ''
           The group to run Syncthing under.
-          By default, a group named <literal>${defaultGroup}</literal> will be created.
+          By default, a group named `${defaultGroup}` will be created.
         '';
       };
 
@@ -407,11 +407,11 @@ in {
         type = with types; nullOr str;
         default = null;
         example = "socks5://address.com:1234";
-        description = ''
+        description = mdDoc ''
           Overwrites the all_proxy environment variable for the Syncthing process to
           the given value. This is normally used to let Syncthing connect
           through a SOCKS5 proxy server.
-          See <link xlink:href="https://docs.syncthing.net/users/proxying.html"/>.
+          See <https://docs.syncthing.net/users/proxying.html>.
         '';
       };
 
@@ -432,25 +432,13 @@ in {
           The path where the settings and keys will exist.
         '';
         default = cfg.dataDir + optionalString cond "/.config/syncthing";
-        defaultText = literalDocBook ''
-          <variablelist>
-            <varlistentry>
-              <term><literal>stateVersion >= 19.03</literal></term>
-              <listitem>
-                <programlisting>
-                  config.${opt.dataDir} + "/.config/syncthing"
-                </programlisting>
-              </listitem>
-            </varlistentry>
-            <varlistentry>
-              <term>otherwise</term>
-              <listitem>
-                <programlisting>
-                  config.${opt.dataDir}
-                </programlisting>
-              </listitem>
-            </varlistentry>
-          </variablelist>
+        defaultText = literalMD ''
+          * if `stateVersion >= 19.03`:
+
+                config.${opt.dataDir} + "/.config/syncthing"
+          * otherwise:
+
+                config.${opt.dataDir}
         '';
       };
 
diff --git a/nixos/modules/tasks/network-interfaces-systemd.nix b/nixos/modules/tasks/network-interfaces-systemd.nix
index 80808e0c08fa5..1657fabcd9b1c 100644
--- a/nixos/modules/tasks/network-interfaces-systemd.nix
+++ b/nixos/modules/tasks/network-interfaces-systemd.nix
@@ -59,15 +59,14 @@ in
         genericNetwork = override:
           let gateway = optional (cfg.defaultGateway != null && (cfg.defaultGateway.address or "") != "") cfg.defaultGateway.address
             ++ optional (cfg.defaultGateway6 != null && (cfg.defaultGateway6.address or "") != "") cfg.defaultGateway6.address;
-          in optionalAttrs (gateway != [ ]) {
-            routes = override [
-              {
+              makeGateway = gateway: {
                 routeConfig = {
                   Gateway = gateway;
                   GatewayOnLink = false;
                 };
-              }
-            ];
+              };
+          in optionalAttrs (gateway != [ ]) {
+            routes = override (map makeGateway gateway);
           } // optionalAttrs (domains != [ ]) {
             domains = override domains;
           };
@@ -89,20 +88,22 @@ in
           # more likely to result in interfaces being configured to
           # use DHCP when they shouldn't.
 
-          # We set RequiredForOnline to false, because it's fairly
-          # common for such devices to have multiple interfaces and
-          # only one of them to be connected (e.g. a laptop with
-          # ethernet and WiFi interfaces). Maybe one day networkd will
-          # support "any"-style RequiredForOnline...
+          # When wait-online.anyInterface is enabled, RequiredForOnline really
+          # means "sufficient for online", so we can enable it.
+          # Otherwise, don't block the network coming online because of default networks.
           matchConfig.Name = ["en*" "eth*"];
           DHCP = "yes";
-          linkConfig.RequiredForOnline = lib.mkDefault false;
+          linkConfig.RequiredForOnline =
+            lib.mkDefault config.systemd.network.wait-online.anyInterface;
+          networkConfig.IPv6PrivacyExtensions = "kernel";
         };
         networks."99-wireless-client-dhcp" = lib.mkIf cfg.useDHCP {
           # Like above, but this is much more likely to be correct.
           matchConfig.WLANInterfaceType = "station";
           DHCP = "yes";
-          linkConfig.RequiredForOnline = lib.mkDefault false;
+          linkConfig.RequiredForOnline =
+            lib.mkDefault config.systemd.network.wait-online.anyInterface;
+          networkConfig.IPv6PrivacyExtensions = "kernel";
           # We also set the route metric to one more than the default
           # of 1024, so that Ethernet is preferred if both are
           # available.
diff --git a/nixos/modules/virtualisation/xen-dom0.nix b/nixos/modules/virtualisation/xen-dom0.nix
index 975eed10cd267..a999efcb44e64 100644
--- a/nixos/modules/virtualisation/xen-dom0.nix
+++ b/nixos/modules/virtualisation/xen-dom0.nix
@@ -23,12 +23,12 @@ in
         default = false;
         type = types.bool;
         description =
-          ''
+          mdDoc ''
             Setting this option enables the Xen hypervisor, a
             virtualisation technology that allows multiple virtual
-            machines, known as <emphasis>domains</emphasis>, to run
+            machines, known as *domains*, to run
             concurrently on the physical machine.  NixOS runs as the
-            privileged <emphasis>Domain 0</emphasis>.  This option
+            privileged *Domain 0*.  This option
             requires a reboot to take effect.
           '';
       };