treewide: fix modules options types where the default is null

They can be caught with `nixos-option -r` on an empty ({...}:{}) NixOS
configuration.

6 files changed, 7 insertions, 7 deletions

diff --git a/nixos/modules/services/audio/icecast.nix b/nixos/modules/services/audio/icecast.nix
index 6a8a0f9975b..e9a54c5c255 100644
--- a/nixos/modules/services/audio/icecast.nix
+++ b/nixos/modules/services/audio/icecast.nix
@@ -47,7 +47,7 @@ in {
       enable = mkEnableOption "Icecast server";
 
       hostname = mkOption {
-        type = types.str;
+        type = types.nullOr types.str;
         description = "DNS name or IP address that will be used for the stream directory lookups or possibily the playlist generation if a Host header is not provided.";
         default = config.networking.domain;
       };
diff --git a/nixos/modules/services/hardware/fancontrol.nix b/nixos/modules/services/hardware/fancontrol.nix
index bb4541a784d..e1ce11a5aef 100644
--- a/nixos/modules/services/hardware/fancontrol.nix
+++ b/nixos/modules/services/hardware/fancontrol.nix
@@ -12,7 +12,7 @@ in{
 
     config = mkOption {
       default = null;
-      type = types.lines;
+      type = types.nullOr types.lines;
       description = "Fancontrol configuration file content. See <citerefentry><refentrytitle>pwmconfig</refentrytitle><manvolnum>8</manvolnum></citerefentry> from the lm_sensors package.";
       example = ''
         # Configuration file generated by pwmconfig
diff --git a/nixos/modules/services/misc/gammu-smsd.nix b/nixos/modules/services/misc/gammu-smsd.nix
index 3057d7fd1a0..552725f1384 100644
--- a/nixos/modules/services/misc/gammu-smsd.nix
+++ b/nixos/modules/services/misc/gammu-smsd.nix
@@ -172,7 +172,7 @@ in {
           };
 
           database = mkOption {
-            type = types.str;
+            type = types.nullOr types.str;
             default = null;
             description = "Database name to store sms data";
           };
diff --git a/nixos/modules/services/network-filesystems/orangefs/server.nix b/nixos/modules/services/network-filesystems/orangefs/server.nix
index 74ebdc13402..8eb754fe611 100644
--- a/nixos/modules/services/network-filesystems/orangefs/server.nix
+++ b/nixos/modules/services/network-filesystems/orangefs/server.nix
@@ -83,14 +83,14 @@ in {
       };
 
       dataStorageSpace = mkOption {
-        type = types.str;
+        type = types.nullOr types.str;
         default = null;
         example = "/data/storage";
         description = "Directory for data storage.";
       };
 
       metadataStorageSpace = mkOption {
-        type = types.str;
+        type = types.nullOr types.str;
         default = null;
         example = "/data/meta";
         description = "Directory for meta data storage.";
diff --git a/nixos/modules/services/networking/monero.nix b/nixos/modules/services/networking/monero.nix
index b9536430868..3e7aaf6efb5 100644
--- a/nixos/modules/services/networking/monero.nix
+++ b/nixos/modules/services/networking/monero.nix
@@ -87,7 +87,7 @@ in
       };
 
       rpc.password = mkOption {
-        type = types.str;
+        type = types.nullOr types.str;
         default = null;
         description = ''
           Password for RPC connections.
diff --git a/nixos/modules/services/networking/namecoind.nix b/nixos/modules/services/networking/namecoind.nix
index ead7f085943..19cedb7bfc6 100644
--- a/nixos/modules/services/networking/namecoind.nix
+++ b/nixos/modules/services/networking/namecoind.nix
@@ -89,7 +89,7 @@ in
       };
 
       rpc.password = mkOption {
-        type = types.str;
+        type = types.nullOr types.str;
         default = null;
         description = ''
           Password for RPC connections.