From c439c8af77b674da78d1f40fbbfc036ce81b43ba Mon Sep 17 00:00:00 2001
From: frostedoyster <bigi.f@libero.it>
Date: Wed, 30 Oct 2024 18:53:14 +0100
Subject: [PATCH] Check equality of int types

---
 src/KOKKOS/metatensor_system_kokkos.cpp | 1 -
 src/KOKKOS/pair_metatensor_kokkos.cpp   | 5 ++++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/KOKKOS/metatensor_system_kokkos.cpp b/src/KOKKOS/metatensor_system_kokkos.cpp
index 8eccab9c71c..5b5daac72dc 100644
--- a/src/KOKKOS/metatensor_system_kokkos.cpp
+++ b/src/KOKKOS/metatensor_system_kokkos.cpp
@@ -28,7 +28,6 @@
 #include "atom_kokkos.h"
 
 #include <torch/cuda.h>
-#include <chrono>
 
 #ifndef KOKKOS_ENABLE_CUDA
 // fake Kokkos::Cuda for non-CUDA builds
diff --git a/src/KOKKOS/pair_metatensor_kokkos.cpp b/src/KOKKOS/pair_metatensor_kokkos.cpp
index 3fd275f9a5f..29710c925e7 100644
--- a/src/KOKKOS/pair_metatensor_kokkos.cpp
+++ b/src/KOKKOS/pair_metatensor_kokkos.cpp
@@ -47,7 +47,10 @@
 
 #include "metatensor_system_kokkos.h"
 
-#include <chrono>
+// LAMMPS uses `LAMMPS_NS::tagint` and `int` for tags and neighbor lists, respectively.
+// For the moment, we require both to be int32_t for this interface
+static_assert(std::is_same_v<LAMMPS_NS::tagint, int32_t>, "Error: LAMMPS_INT must be int32_t to compile metatensor/kk");
+static_assert(std::is_same_v<int, int32_t>, "Error: int must be int32_t to compile metatensor/kk");
 
 #ifndef KOKKOS_ENABLE_CUDA
 namespace Kokkos {