move indent to lib

krebs/3modules/exim-smarthost.nix

@@ -2,7 +2,6 @@
 
 with import <stockholm/lib>;
 let
-  indent = replaceChars ["\n"] ["\n  "];
   cfg = config.krebs.exim-smarthost;
 
   out = {

krebs/3modules/nginx.nix

@@ -129,8 +129,6 @@ let
     };
   };
 
-  indent = replaceChars ["\n"] ["\n  "];
-
   to-acme = { server-names, ssl, ... }:
     optionalAttrs ssl.acmeEnable {
       email = "lassulus@gmail.com";

lib/default.nix

@@ -39,6 +39,8 @@ let
       string = toJSON x; # close enough
     }.${type} or reject;
 
+    indent = replaceChars ["\n"] ["\n  "];
+
   };
 in