Make the feature experimental

index-scheduler/src/batch.rs

@@ -1343,6 +1343,9 @@ impl IndexScheduler {
 
                 for (task, (_, settings)) in tasks.iter_mut().zip(settings) {
                     let checked_settings = settings.clone().check();
+                    if checked_settings.proximity_precision.set().is_some() {
+                        self.features.features().check_proximity_precision()?;
+                    }
                     task.details = Some(Details::SettingsUpdate { settings: Box::new(settings) });
                     apply_settings_to_builder(&checked_settings, &mut builder);
 

index-scheduler/src/features.rs

@@ -81,6 +81,19 @@ impl RoFeatures {
             .into())
         }
     }
+
+    pub fn check_proximity_precision(&self) -> Result<()> {
+        if self.runtime.proximity_precision {
+            Ok(())
+        } else {
+            Err(FeatureNotEnabledError {
+                disabled_action: "Using `proximityPrecision` index setting",
+                feature: "proximity precision",
+                issue_link: "https://github.com/orgs/meilisearch/discussions/710",
+            }
+            .into())
+        }
+    }
 }
 
 impl FeatureData {