Safe defaults

diff --git a/upgrade-config.nix b/upgrade-config.nix
index 2ce8829a007e7e36a3cfd84572b5640106229220..67c4ec1d5a4fc56b13ca03b44063cc2c22cbcd3a 100644 (file)
--- a/upgrade-config.nix
+++ b/upgrade-config.nix
@@ -33,6 +33,7 @@ evalModules {
           can use them both as points of intervention in the automation and to
           author and push changes back up.
         '';
+        default = { };
         type = types.attrsOf (types.submodule {
           options = {
             url = mkOption {
@@ -106,6 +107,7 @@ evalModules {
           <literal>repos</literal>' paths.
         '';
         type = types.listOf types.path;
+        default = [ ];
         example = [ "/etc/nixos/channels" ];
       };
 
@@ -113,6 +115,7 @@ evalModules {
         description = ''
           User environments to update as part of an upgrade run.
         '';
+        default = { };
         type = types.attrsOf (types.submodule {
           options = {
             package = mkOption {