From 319ba361bbb0e251a29d5f787e65e95fba710b38 Mon Sep 17 00:00:00 2001
From: bpuchala <bpuchala@users.noreply.github.com>
Date: Wed, 8 Nov 2023 15:43:10 -0500
Subject: [PATCH 1/2] Add is_operator to allow other packages to add  __rmul__
 implementations

---
 python/src/xtal.cpp | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/python/src/xtal.cpp b/python/src/xtal.cpp
index ae59a9a..90a5944 100644
--- a/python/src/xtal.cpp
+++ b/python/src/xtal.cpp
@@ -2104,7 +2104,8 @@ PYBIND11_MODULE(_xtal, m) {
             return get_matrix(op) * coordinate_cart + get_translation(op);
           },
           py::arg("coordinate_cart"),
-          "Transform Cartesian coordinates, represented as a 1d array")
+          "Transform Cartesian coordinates, represented as a 1d array",
+          py::is_operator())
       .def(
           "__mul__",
           [](xtal::SymOp const &op, Eigen::MatrixXd const &coordinate_cart) {
@@ -2116,14 +2117,16 @@ PYBIND11_MODULE(_xtal, m) {
           },
           py::arg("coordinate_cart"),
           "Transform multiple Cartesian coordinates, represented as columns of "
-          "a matrix.")
+          "a matrix.",
+          py::is_operator())
       .def(
           "__mul__",
           [](xtal::SymOp const &lhs, xtal::SymOp const &rhs) {
             return lhs * rhs;
           },
           py::arg("rhs"),
-          "Construct the SymOp equivalent to applying first `rhs`, then this.")
+          "Construct the SymOp equivalent to applying first `rhs`, then this.",
+          py::is_operator())
       .def(
           "__mul__",
           [](xtal::SymOp const &op,
@@ -2131,19 +2134,20 @@ PYBIND11_MODULE(_xtal, m) {
             return copy_apply(op, properties);
           },
           py::arg("rhs"),
-          "Transform CASM-supported properties (local or global).")
+          "Transform CASM-supported properties (local or global).",
+          py::is_operator())
       .def(
           "__mul__",
           [](xtal::SymOp const &op, xtal::Lattice const &lattice) {
             return sym::copy_apply(op, lattice);
           },
-          py::arg("lattice"), "Transform a Lattice.")
+          py::arg("lattice"), "Transform a Lattice.", py::is_operator())
       .def(
           "__mul__",
           [](xtal::SymOp const &op, xtal::SimpleStructure const &simple) {
             return copy_apply(op, simple);
           },
-          py::arg("structure"), "Transform a Structure.")
+          py::arg("structure"), "Transform a Structure.", py::is_operator())
       .def_static(
           "from_dict",
           [](const nlohmann::json &data) {
@@ -3199,7 +3203,8 @@ PYBIND11_MODULE(_xtal, m) {
             return copy_apply(rep, integral_site_coordinate);
           },
           py::arg("integral_site_coordinate"),
-          "Transform an :class:`~libcasm.xtal.IntegralSiteCoordinate`");
+          "Transform an :class:`~libcasm.xtal.IntegralSiteCoordinate`",
+          py::is_operator());
 
   m.def(
       "apply",

From f956e38b84f247c8afdd0369c92a77b27336bb10 Mon Sep 17 00:00:00 2001
From: bpuchala <bpuchala@users.noreply.github.com>
Date: Tue, 14 Nov 2023 14:36:30 -0500
Subject: [PATCH 2/2] version 2.0a7

---
 CHANGELOG.md       | 7 +++++++
 pyproject.toml     | 2 +-
 python/doc/conf.py | 2 +-
 python/setup.py    | 2 +-
 setup.py           | 2 +-
 5 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 94b856b..129fbd5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 
+## [2.0a7] - 2023-11-14
+
+### Changed
+
+- Add py::is_operator() in the bindings of the `__mul__` operators xtal.SymOp and xtal.IntegralSiteCoordinateRep so it possible to add `__rmul__` operators to classes in other modules.
+
+
 ## [2.0a6] - 2023-11-07
 
 ### Changed
diff --git a/pyproject.toml b/pyproject.toml
index d8d0ec6..b1f6183 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "libcasm-xtal"
-version = "2.0a6"
+version = "2.0a7"
 authors = [
   { name="CASM developers", email="casm-developers@lists.engr.ucsb.edu" },
 ]
diff --git a/python/doc/conf.py b/python/doc/conf.py
index 828663a..b7de571 100644
--- a/python/doc/conf.py
+++ b/python/doc/conf.py
@@ -96,7 +96,7 @@
 # The short X.Y version.
 version = "2.0"
 # The full version, including alpha/beta/rc tags.
-release = "2.0a6"
+release = "2.0a7"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/python/setup.py b/python/setup.py
index feb5e26..8bdd9b1 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -1,6 +1,6 @@
 import os
 
-__version__ = "2.0a6"
+__version__ = "2.0a7"
 
 # Available at setup time due to pyproject.toml
 from pybind11.setup_helpers import Pybind11Extension, build_ext
diff --git a/setup.py b/setup.py
index b514faf..c67d003 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name="libcasm-xtal",
-    version="2.0a6",
+    version="2.0a7",
     packages=["libcasm", "libcasm.xtal"],
     package_dir={"": "python"},
     cmake_install_dir="python/libcasm",