diff --git a/polars/polars-ops/src/pivot/positioning.rs b/polars/polars-ops/src/pivot/positioning.rs
index a4688dfa93fd..f6d90c0c640d 100644
--- a/polars/polars-ops/src/pivot/positioning.rs
+++ b/polars/polars-ops/src/pivot/positioning.rs
@@ -29,7 +29,7 @@ pub(super) fn position_aggregates(
             for ((row_idx, col_idx), val) in row_locations
                 .iter()
                 .zip(col_locations)
-                .zip(value_agg_phys.iter())
+                .zip(value_agg_phys.phys_iter())
             {
                 // Safety:
                 // in bounds
@@ -162,7 +162,7 @@ pub(super) fn compute_col_idx(
             let mut col_to_idx = PlHashMap::with_capacity(HASHMAP_INIT_SIZE);
             let mut idx = 0 as IdxSize;
             column_agg_physical
-                .iter()
+                .phys_iter()
                 .map(|v| {
                     let idx = *col_to_idx.entry(v).or_insert_with(|| {
                         let old_idx = idx;
@@ -248,7 +248,7 @@ pub(super) fn compute_row_idx(
                     PlIndexMap::with_capacity_and_hasher(HASHMAP_INIT_SIZE, Default::default());
                 let mut idx = 0 as IdxSize;
                 let row_locations = index_agg_physical
-                    .iter()
+                    .phys_iter()
                     .map(|v| {
                         let idx = *row_to_idx.entry(v).or_insert_with(|| {
                             let old_idx = idx;
@@ -282,7 +282,7 @@ pub(super) fn compute_row_idx(
             .collect::<Vec<_>>();
         let mut iters = index_agg_physical
             .iter()
-            .map(|s| s.iter())
+            .map(|s| s.phys_iter())
             .collect::<Vec<_>>();
         let mut row_to_idx =
             PlIndexMap::with_capacity_and_hasher(HASHMAP_INIT_SIZE, Default::default());
diff --git a/py-polars/Cargo.lock b/py-polars/Cargo.lock
index a9a11fcf45ca..4771554bdc38 100644
--- a/py-polars/Cargo.lock
+++ b/py-polars/Cargo.lock
@@ -456,6 +456,18 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
 
+[[package]]
+name = "enum_dispatch"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eb359f1476bf611266ac1f5355bc14aeca37b299d0ebccc038ee7058891c9cb"
+dependencies = [
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "ethnum"
 version = "1.3.0"
@@ -1375,6 +1387,7 @@ dependencies = [
 name = "polars-pipe"
 version = "0.24.3"
 dependencies = [
+ "enum_dispatch",
  "hashbrown",
  "num",
  "polars-core",