common nixpkgs: use types.str

1 files changed, 5 insertions, 5 deletions

diff --git a/modules/common/nixpkgs.nix b/modules/common/nixpkgs.nix
index 9f8e7027..36ebbb07 100644
--- a/modules/common/nixpkgs.nix
+++ b/modules/common/nixpkgs.nix
@@ -5,12 +5,12 @@ with lib;
 {
   options = {
     nixpkgs.url = mkOption {
-      type = types.string;
-      description = "url of the remote repo";
+      type = types.str;
+      description = "URL of the nixpkgs repository.";
     };
-    nixpkgs.rev= mkOption {
-      type = types.string;
-      description = "revision of the remote repo";
+    nixpkgs.rev = mkOption {
+      type = types.str;
+      description = "Revision of the remote repository.";
     };
   };
 }