Start development of v1.1

- Fix `__version__`  being `"VERSION_INFO"` instead of the version
- Make getting started notebook install v1.0
- Fix failing to compile decoder for empty detector error models

CMakeLists.txt

@@ -106,6 +106,7 @@ if ((${pybind11_FOUND} AND ${Python_FOUND}) OR "$ENV{CMAKE_FORCE_PYBIND_CHROMOBI
     target_compile_options(chromobius_pybind PRIVATE -O3 -DNDEBUG)
     target_link_libraries(chromobius_pybind PRIVATE libstim libpymatching)
     target_link_options(chromobius_pybind PRIVATE -O3)
+    add_compile_definitions(CHROMOBIUS_VERSION_INFO=${CHROMOBIUS_VERSION_INFO})
 else()
     message("WARNING: Skipped chromobius_pybind target. `pybind11` not found. To fix, install pybind11. On debian based distributions, the package name is `pybind11-dev`")
 endif()

setup.py

@@ -51,7 +51,7 @@ def build_extension(self, ext):
             ext.sourcedir,
             f"-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={pathlib.Path(self.get_ext_fullpath(ext.name)).parent.absolute()}",
             f"-DPYTHON_EXECUTABLE={sys.executable}",
-            f"-DVERSION_INFO={__version__}",
+            f"-DCHROMOBIUS_VERSION_INFO={__version__}",
             *osx_cmake_flags,
             *[
                 env_arg_item
@@ -71,7 +71,7 @@ def build_extension(self, ext):
         ], cwd=build_temp, env=build_env)
 
 
-__version__ = '1.0.dev0'
+__version__ = '1.1.dev0'
 
 with open("README.md", "r", encoding="utf-8") as f:
     long_description = f.read()

src/chromobius/decode/decoder.cc

@@ -45,7 +45,7 @@ Decoder Decoder::from_dem(const stim::DetectorErrorModel &dem, DecoderConfigOpti
     for (const auto &e : remnant_edges) {
         result.atomic_errors.emplace(std::move(e));
     }
-    if (!options.include_coords_in_mobius_dem || result.mobius_dem.count_detectors() < result.node_colors.size() * 2) {
+    if (result.mobius_dem.count_detectors() < result.node_colors.size() * 2) {
         // Ensure the number of detectors in the mobius dem is exactly correct.
         result.mobius_dem.append_detector_instruction(
             {}, stim::DemTarget::relative_detector_id(result.node_colors.size() * 2 - 1));

src/chromobius/decode/decoder.test.cc

@@ -97,7 +97,6 @@ TEST(decoder, from_dem_d5_color_code_x_only) {
         error(0.1) D10 D16 ^ D11 D17
         error(0.1) D5 D7 ^ D4 D10 ^ D6 D11
         error(0.1) D9 D17 ^ D12 D16 ^ D8 D13
-        detector D17
     )DEM");
     ASSERT_TRUE(decoder.mobius_dem.approx_equals(expected_mobius_dem, 1e-5));
 }

src/chromobius/pybind/chromobius.pybind.cc

@@ -122,7 +122,7 @@ struct CompiledDecoder {
 };
 
 PYBIND11_MODULE(chromobius, m) {
-    m.attr("__version__") = xstr_literal(VERSION_INFO);
+    m.attr("__version__") = xstr_literal(CHROMOBIUS_VERSION_INFO);
     m.doc() = R"pbdoc(
         chromobius: A fast implementation of the mobius color code decoder.
     )pbdoc";

src/chromobius/pybind/chromobius_pybind_test.py

@@ -20,6 +20,7 @@
 
 
 def test_version():
+    assert '.' in chromobius.__version__
     assert chromobius.__version__ is not None
 
 
@@ -74,3 +75,7 @@ def test_decoding():
     assert np.array_equal(predictions, predictions2)
     mistakes = np.count_nonzero(np.any(predictions != obs, axis=1))
     assert mistakes < 100
+
+
+def test_empty():
+    assert chromobius.compile_decoder_for_dem(stim.DetectorErrorModel()) is not None