Avoid builtins

flake/hosts.nix

@@ -20,9 +20,9 @@ let
             "${self}/users"
             |> builtins.readDir
             |> lib.filterAttrs (_: type: type == "directory")
-            |> builtins.attrNames
+            |> lib.attrNames
             |> map (user: "${self}/users/${user}/@${hostName}")
-            |> builtins.filter (path: builtins.pathExists path);
+            |> lib.filter (path: lib.pathExists path);
         in
         [
           { networking = { inherit hostName; }; }

modules/home/programs/vscode.nix

@@ -31,7 +31,7 @@
 
     systemd.user.tmpfiles.rules =
       let
-        settings = builtins.replaceStrings [ "," ] [ ",\\n" ] (
+        settings = lib.replaceStrings [ "," ] [ ",\\n" ] (
           builtins.toJSON {
             "workbench.colorTheme" =
               {

modules/system/services/radicale.nix

@@ -77,7 +77,7 @@ in
 
     systemd.services.radicale.serviceConfig.ExecStartPre =
       let
-        gitignore = builtins.toFile "radicale-collection-gitignore" ''
+        gitignore = pkgs.writeText "radicale-collection-gitignore" ''
           .Radicale.cache
           .Radicale.lock
           .Radicale.tmp-*