diff --git a/lib/default.nix b/lib/default.nix
index 978628c..51fa00d 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -143,6 +143,8 @@ rec {
     else
       [];
 
+  indent = i: str: lib.concatMapStringsSep "\n" (x: (lib.strings.replicate i " ") + x) (lib.splitString "\n" str);
+
   # Generator for XML
   formatXML = {
     enclosingRoot ? null
diff --git a/test/common.nix b/test/common.nix
index c5b55e0..7a90853 100644
--- a/test/common.nix
+++ b/test/common.nix
@@ -94,7 +94,6 @@ let
     )
     + (let
       script = extraScript args;
-      indent = i: str: lib.concatMapStringsSep "\n" (x: (lib.strings.replicate i " ") + x) (lib.splitString "\n" script);
     in
       lib.optionalString (script != "") script)
   );