In include/utils.h, ssize_t is an alias for py::ssize_t, which is an alias for
Py_ssize_t in Python, which is an alias for the system ssize_t.
The latter is defined in glibc as int if __WORDSIZE == 32 and as long int if
__WORDSIZE == 64.  Therefore, we need to remove the explicit template
specialization for int in the first case.

diff --git a/include/utils.h b/include/utils.h
index 950a02b..82a9591 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -141,10 +141,12 @@ template <>
 inline py::handle GET_ITEM_HANDLE<py::tuple>(const py::handle& container, const size_t& item) {
     return PyTuple_GET_ITEM(container.ptr(), py::ssize_t_cast(item));
 }
+#if __WORDSIZE != 32
 template <>
 inline py::handle GET_ITEM_HANDLE<py::tuple>(const py::handle& container, const int& item) {
     return PyTuple_GET_ITEM(container.ptr(), py::ssize_t_cast(item));
 }
+#endif
 template <>
 inline py::handle GET_ITEM_HANDLE<py::list>(const py::handle& container, const ssize_t& item) {
     return PyList_GET_ITEM(container.ptr(), item);
@@ -153,10 +155,12 @@ template <>
 inline py::handle GET_ITEM_HANDLE<py::list>(const py::handle& container, const size_t& item) {
     return PyList_GET_ITEM(container.ptr(), py::ssize_t_cast(item));
 }
+#if __WORDSIZE != 32
 template <>
 inline py::handle GET_ITEM_HANDLE<py::list>(const py::handle& container, const int& item) {
     return PyList_GET_ITEM(container.ptr(), py::ssize_t_cast(item));
 }
+#endif
 
 template <typename Container, typename Item>
 inline py::object GET_ITEM_BORROW(const py::handle& container, const Item& item) {
@@ -171,11 +175,13 @@ inline py::object GET_ITEM_BORROW<py::tuple>(const py::handle& container, const
     return py::reinterpret_borrow<py::object>(
         PyTuple_GET_ITEM(container.ptr(), py::ssize_t_cast(item)));
 }
+#if __WORDSIZE != 32
 template <>
 inline py::object GET_ITEM_BORROW<py::tuple>(const py::handle& container, const int& item) {
     return py::reinterpret_borrow<py::object>(
         PyTuple_GET_ITEM(container.ptr(), py::ssize_t_cast(item)));
 }
+#endif
 template <>
 inline py::object GET_ITEM_BORROW<py::list>(const py::handle& container, const ssize_t& item) {
     return py::reinterpret_borrow<py::object>(PyList_GET_ITEM(container.ptr(), item));
@@ -185,11 +191,13 @@ inline py::object GET_ITEM_BORROW<py::list>(const py::handle& container, const s
     return py::reinterpret_borrow<py::object>(
         PyList_GET_ITEM(container.ptr(), py::ssize_t_cast(item)));
 }
+#if __WORDSIZE != 32
 template <>
 inline py::object GET_ITEM_BORROW<py::list>(const py::handle& container, const int& item) {
     return py::reinterpret_borrow<py::object>(
         PyList_GET_ITEM(container.ptr(), py::ssize_t_cast(item)));
 }
+#endif
 
 template <typename Container, typename Item>
 inline py::object GET_ITEM_STEAL(const py::handle& container, const Item& item) {
@@ -204,11 +212,13 @@ inline py::object GET_ITEM_STEAL<py::tuple>(const py::handle& container, const s
     return py::reinterpret_steal<py::object>(
         PyTuple_GET_ITEM(container.ptr(), py::ssize_t_cast(item)));
 }
+#if __WORDSIZE != 32
 template <>
 inline py::object GET_ITEM_STEAL<py::tuple>(const py::handle& container, const int& item) {
     return py::reinterpret_steal<py::object>(
         PyTuple_GET_ITEM(container.ptr(), py::ssize_t_cast(item)));
 }
+#endif
 template <>
 inline py::object GET_ITEM_STEAL<py::list>(const py::handle& container, const ssize_t& item) {
     return py::reinterpret_steal<py::object>(PyList_GET_ITEM(container.ptr(), item));
@@ -218,11 +228,13 @@ inline py::object GET_ITEM_STEAL<py::list>(const py::handle& container, const si
     return py::reinterpret_steal<py::object>(
         PyList_GET_ITEM(container.ptr(), py::ssize_t_cast(item)));
 }
+#if __WORDSIZE != 32
 template <>
 inline py::object GET_ITEM_STEAL<py::list>(const py::handle& container, const int& item) {
     return py::reinterpret_steal<py::object>(
         PyList_GET_ITEM(container.ptr(), py::ssize_t_cast(item)));
 }
+#endif
 
 template <typename Container, typename Item>
 inline void SET_ITEM(const py::handle& container, const Item& item, const py::handle& value) {
@@ -240,12 +252,14 @@ inline void SET_ITEM<py::tuple>(const py::handle& container,
                                 const py::handle& value) {
     PyTuple_SET_ITEM(container.ptr(), py::ssize_t_cast(item), value.inc_ref().ptr());
 }
+#if __WORDSIZE != 32
 template <>
 inline void SET_ITEM<py::tuple>(const py::handle& container,
                                 const int& item,
                                 const py::handle& value) {
     PyTuple_SET_ITEM(container.ptr(), py::ssize_t_cast(item), value.inc_ref().ptr());
 }
+#endif
 template <>
 inline void SET_ITEM<py::list>(const py::handle& container,
                                const ssize_t& item,
@@ -258,12 +272,14 @@ inline void SET_ITEM<py::list>(const py::handle& container,
                                const py::handle& value) {
     PyList_SET_ITEM(container.ptr(), py::ssize_t_cast(item), value.inc_ref().ptr());
 }
+#if __WORDSIZE != 32
 template <>
 inline void SET_ITEM<py::list>(const py::handle& container,
                                const int& item,
                                const py::handle& value) {
     PyList_SET_ITEM(container.ptr(), py::ssize_t_cast(item), value.inc_ref().ptr());
 }
+#endif
 
 template <typename PyType>
 inline void AssertExact(const py::handle& object) {