fix: expose initial_no_support_extruder to the filename format template

# Description

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  > * What issue does this PR address or fix?
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Avoid calling Print::output_filename() when a slice is canceled or
fails, since unresolved filename placeholders can throw before G-code
export completes.
Instead, we should use the model name in ctx.name and the stable model
ID in ctx.id, consistently across slice and G-code export events.

# Screenshots/Recordings/Graphs

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## Tests

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changes made in this PR.
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Testing](https://www.orcaslicer.com/wiki/how_to_download_pr_artifacts)
Fix #15885

.github/workflows/unit_tests.yml

@@ -44,14 +44,6 @@ jobs:
         uses: actions/download-artifact@v8
         with:
           name: ${{ inputs.artifact }}
-      # run_unit_tests.sh installs the plugin tests' numpy with the uv the build stages
-      # beside them; the Windows arm64 build bundles none, so put one on PATH there.
-      - name: Install uv
-        if: runner.os == 'Windows' && runner.arch == 'ARM64'
-        uses: astral-sh/setup-uv@v10.2.0
-        with:
-          version: "0.11.21"  # ORCA_UV_VERSION in CMakeLists.txt
-          enable-cache: false
       - uses: lukka/get-cmake@latest
         with:
           cmakeVersion: "~4.3.0"  # use most recent 4.3.x version

.gitignore

@@ -52,6 +52,4 @@ internal_docs/
 __pycache__/
 *.pyc
 *.opc
-/.test/
-docs/superpowers/
-ctest_results.xml
+docs/superpowers/

scripts/run_unit_tests.sh

@@ -2,8 +2,7 @@
 
 # This file is made to support the unit tests workflow.
 # It should only require the directories build/tests, scripts/, and tests/ to function,
-# and cmake (with ctest) installed -- plus network access to PyPI whenever numpy has to
-# be installed into a freshly built test tree (see below).
+# and cmake (with ctest) installed.
 # (otherwise, update the workflow too, but try to avoid to keep things self-contained)
 #
 # Usage: run_unit_tests.sh [TEST_DIR] [BUILD_CONFIG]
@@ -19,52 +18,6 @@ cd "${ROOT_DIR}" || exit 1
 TEST_DIR="${1:-build/tests}"
 BUILD_CONFIG="${2:-}"
 
-# The slic3rutils plugin-host tests build numpy arrays through the CPython copied next
-# to the test binary (see tests/slic3rutils/CMakeLists.txt), which ships no numpy.
-# Install it with the uv staged beside that runtime -- the tool the app installs plugin
-# dependencies with -- straight into the interpreter's own site-packages: no pip needed
-# in the runtime, no PYTHONPATH. Re-checked every run because a rebuild of the test
-# target re-copies the runtime; needs network whenever it installs. Pinned so a numpy
-# release cannot change results on its own.
-NUMPY_VERSION="2.5.3"
-
-# Without numpy those tests assert the numpy-absent error path instead, so a local run
-# only warns. Under CI it fails the run, which would otherwise stay green while silently
-# dropping the array coverage. (The Flatpak leg runs this inside `flatpak build`, whose
-# minimal environment has no CI, and its offline build stages no uv, so numpy stays
-# best-effort there.)
-numpy_unavailable() {
-    if [ -n "${CI:-}" ]; then
-        echo "error: $1" >&2
-        exit 1
-    fi
-    echo "warning: $1; the numpy-backed binding tests will cover only the numpy-absent path."
-}
-
-has_pinned_numpy() {
-    "${python_exe}" -c "import sys, numpy; sys.exit(numpy.__version__ != '${NUMPY_VERSION}')" >/dev/null 2>&1
-}
-
-find_args=("${TEST_DIR}" \( -path '*/python/bin/python3' -o -path '*/python/python.exe' \))
-# Multi-config trees hold one copy per configuration; only bootstrap the one being run.
-[ -n "${BUILD_CONFIG}" ] && find_args+=(-path "*/${BUILD_CONFIG}/*")
-python_exe="$(find "${find_args[@]}" -print -quit 2>/dev/null)"
-
-if [ -z "${python_exe}" ]; then
-    numpy_unavailable "no bundled Python under ${TEST_DIR}"
-elif ! has_pinned_numpy; then
-    uv_exe="${python_exe%/python/*}/tools/uv/uv"
-    # Builds that bundle no uv (Windows arm64) fall back to one on PATH.
-    [ -x "${uv_exe}" ] || uv_exe="$(command -v uv)"
-    echo "Installing numpy ${NUMPY_VERSION} into the embedded test interpreter (${python_exe})..."
-    if [ -z "${uv_exe}" ]; then
-        numpy_unavailable "no uv staged beside the tests or on PATH"
-    elif ! "${uv_exe}" pip install --python "${python_exe}" --only-binary :all: "numpy==${NUMPY_VERSION}" \
-            || ! has_pinned_numpy; then
-        numpy_unavailable "could not install numpy ${NUMPY_VERSION} into ${python_exe}"
-    fi
-fi
-
 # Run the whole suite, excluding tests tagged [NotWorking] and tests labelled RequiresApp,
 # which run the built orca-slicer binary that this directory does not contain.
 # --no-tests=error fails the job if the filter matches nothing (instead of passing green).

src/libslic3r/GCode.cpp

@@ -2504,7 +2504,8 @@ void GCode::do_export(Print* print, const char* path, GCodeProcessorResult* resu
 
     {
         LifecycleEventContext ctx;
-        ctx.name = std::to_string(print->model().id().id);
+        ctx.id = std::to_string(print->model().id().id);
+        ctx.name = print->get_model_name();
         ctx.code = LifecycleEvtCode::Ok;
         ctx.msg  = path;
         ctx.cancellation_check = [print]() { return print->canceled(); };
@@ -2556,7 +2557,8 @@ void GCode::do_export(Print* print, const char* path, GCodeProcessorResult* resu
         }
         {
             LifecycleEventContext ctx;
-            ctx.name = std::to_string(print->model().id().id);
+            ctx.id = std::to_string(print->model().id().id);
+            ctx.name = print->get_model_name();
             ctx.code = LifecycleEvtCode::Error;
             ctx.msg  = std::string(path) + "\n" + err_msg;
             ctx.cancellation_check = [print]() { return print->canceled(); };
@@ -2580,7 +2582,8 @@ void GCode::do_export(Print* print, const char* path, GCodeProcessorResult* resu
         boost::nowide::remove(path_tmp.c_str());
         {
             LifecycleEventContext ctx;
-            ctx.name = std::to_string(print->model().id().id);
+            ctx.id = std::to_string(print->model().id().id);
+            ctx.name = print->get_model_name();
             ctx.code = LifecycleEvtCode::Error;
             ctx.msg  = std::string(path) + "\n" + ex.what();
             ctx.cancellation_check = [print]() { return print->canceled(); };
@@ -2693,7 +2696,8 @@ void GCode::do_export(Print* print, const char* path, GCodeProcessorResult* resu
     if (ret) {
         {
             LifecycleEventContext ctx;
-            ctx.name = std::to_string(print->model().id().id);
+            ctx.id = std::to_string(print->model().id().id);
+            ctx.name = print->get_model_name();
             ctx.code = LifecycleEvtCode::Error;
             ctx.msg  = std::string(path) + "\nFailed to rename the output G-code file: " + ret.message();
             ctx.cancellation_check = [print]() { return print->canceled(); };
@@ -2712,7 +2716,8 @@ void GCode::do_export(Print* print, const char* path, GCodeProcessorResult* resu
 
     {
         LifecycleEventContext ctx;
-        ctx.name = std::to_string(print->model().id().id);
+        ctx.id = std::to_string(print->model().id().id);
+        ctx.name = print->get_model_name();
         ctx.code = LifecycleEvtCode::Ok;
         ctx.msg  = path;
         ctx.cancellation_check = [print]() { return print->canceled(); };
@@ -4193,6 +4198,7 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
         // Const input (tool-change fallback for non-wipe-tower prints)
         print.tool_ordering()));
     print.m_print_statistics.initial_tool = initial_extruder_id;
+    print.m_print_statistics.initial_no_support_tool = initial_non_support_extruder_id;
     if (!is_bbl_printers) {
         file.write_format("; total filament used [g] = %.2lf\n",
             print.m_print_statistics.total_weight);

src/libslic3r/Print.cpp

@@ -2717,7 +2717,8 @@ void Print::process(long long *time_cost_with_cache, bool use_cache)
 
     {
         LifecycleEventContext ctx;
-        ctx.name = std::to_string(m_model.id().id);
+        ctx.id = std::to_string(m_model.id().id);
+        ctx.name = get_model_name();
         ctx.code = LifecycleEvtCode::Ok;
         ctx.cancellation_check = [this]() { return canceled(); };
         fire_lifecycle_event(LifecycleEvent::SliceStarted, ctx);
@@ -3344,7 +3345,8 @@ void Print::process(long long *time_cost_with_cache, bool use_cache)
 
     {
         LifecycleEventContext ctx;
-        ctx.name = std::to_string(m_model.id().id);
+        ctx.id = std::to_string(m_model.id().id);
+        ctx.name = get_model_name();
         ctx.code = LifecycleEvtCode::Ok;
         ctx.cancellation_check = [this]() { return canceled(); };
         fire_lifecycle_event(LifecycleEvent::SliceGeometryFinished, ctx);
@@ -4950,7 +4952,8 @@ void Print::export_gcode_from_previous_file(const std::string& file, GCodeProces
 {
     {
         LifecycleEventContext ctx;
-        ctx.name = std::to_string(m_model.id().id);
+        ctx.id = std::to_string(m_model.id().id);
+        ctx.name = get_model_name();
         ctx.code = LifecycleEvtCode::Ok;
         ctx.msg  = file;
         ctx.cancellation_check = [this]() { return canceled(); };
@@ -4980,7 +4983,8 @@ void Print::export_gcode_from_previous_file(const std::string& file, GCodeProces
         BOOST_LOG_TRIVIAL(error) << __FUNCTION__ <<  boost::format(": found errors when process gcode file %1%") %file.c_str();
         {
             LifecycleEventContext ctx;
-            ctx.name = std::to_string(m_model.id().id);
+            ctx.id = std::to_string(m_model.id().id);
+            ctx.name = get_model_name();
             ctx.code = LifecycleEvtCode::Error;
             ctx.msg  = file + "\n" + ex.what();
             ctx.cancellation_check = [this]() { return canceled(); };
@@ -4994,7 +4998,8 @@ void Print::export_gcode_from_previous_file(const std::string& file, GCodeProces
 
     {
         LifecycleEventContext ctx;
-        ctx.name = std::to_string(m_model.id().id);
+        ctx.id = std::to_string(m_model.id().id);
+        ctx.name = get_model_name();
         ctx.code = LifecycleEvtCode::Ok;
         ctx.msg  = file;
         ctx.cancellation_check = [this]() { return canceled(); };
@@ -5044,6 +5049,7 @@ DynamicConfig PrintStatistics::config() const
     config.set_key_value("total_wipe_tower_filament", new ConfigOptionFloat(this->total_wipe_tower_filament));
     config.set_key_value("initial_tool",              new ConfigOptionInt(static_cast<int>(this->initial_tool)));
     config.set_key_value("initial_extruder",          new ConfigOptionInt(static_cast<int>(this->initial_tool)));
+    config.set_key_value("initial_no_support_extruder", new ConfigOptionInt(static_cast<int>(this->initial_no_support_tool)));
     return config;
 }
 
@@ -5053,7 +5059,7 @@ DynamicConfig PrintStatistics::placeholders()
     for (const std::string key : {
         "print_time", "normal_print_time", "silent_print_time",
         "used_filament", "extruded_volume", "extruded_volume_total", "total_cost", "total_weight", "extruded_weight_total",
-        "initial_tool", "initial_extruder", "total_toolchanges", "total_wipe_tower_cost", "total_wipe_tower_filament"})
+        "initial_tool", "initial_extruder", "initial_no_support_extruder", "total_toolchanges", "total_wipe_tower_cost", "total_wipe_tower_filament"})
         config.set_key_value(key, new ConfigOptionString(std::string("{") + key + "}"));
     return config;
 }

src/libslic3r/Print.hpp

@@ -830,6 +830,7 @@ struct PrintStatistics
     double                          total_wipe_tower_cost;
     double                          total_wipe_tower_filament;
     unsigned int                    initial_tool;
+    unsigned int                    initial_no_support_tool;
     std::map<size_t, double>        filament_stats;
 
     // Config with the filled in print statistics.
@@ -848,6 +849,7 @@ struct PrintStatistics
         total_wipe_tower_cost  = 0.;
         total_wipe_tower_filament = 0.;
         initial_tool           = 0;
+        initial_no_support_tool = 0;
         filament_stats.clear();
     }
     static const std::string FilamentUsedG;

src/slic3r/GUI/Plater.cpp

@@ -12800,8 +12800,6 @@ void Plater::priv::on_process_completed(SlicingProcessCompletedEvent &evt)
     notification_manager->set_slicing_progress_export_possible();
 
     // Reset the "export G-code path" name, so that the automatic background processing will be enabled again.
-    const std::string lifecycle_job_name = this->background_process.fff_print() ?
-        this->background_process.fff_print()->output_filename() : std::string();
     this->background_process.reset_export();
     // This bool stops showing export finished notification even when process_completed_with_error is false
     bool has_error = false;
@@ -12848,8 +12846,18 @@ void Plater::priv::on_process_completed(SlicingProcessCompletedEvent &evt)
 
     {
         Slic3r::LifecycleEventContext ctx;
-        ctx.name = lifecycle_job_name;
-        ctx.code = evt.cancelled() ? Slic3r::LifecycleEvtCode::Warn : (has_error ? Slic3r::LifecycleEvtCode::Error : Slic3r::LifecycleEvtCode::Ok);
+        if (const PrintBase* print = this->background_process.current_print()) {
+            const Model& model = print->model();
+            ctx.id             = std::to_string(model.id().id);
+            if (model.model_info)
+                ctx.name = model.model_info->model_name;
+        } else {
+            // Realistically Printbase* print will never be null because select_technology already asserts an active print
+            // and the worker thread asserts it before processing.
+            BOOST_LOG_TRIVIAL(warning) << __FUNCTION__ << ": slicing completed without an active print; lifecycle event has no model ID";
+        }
+        ctx.code = evt.cancelled() ? Slic3r::LifecycleEvtCode::Warn :
+                                     (has_error ? Slic3r::LifecycleEvtCode::Error : Slic3r::LifecycleEvtCode::Ok);
         ctx.msg  = evt.cancelled() ? "cancelled" : (has_error ? lifecycle_error_msg : std::string());
         Slic3r::fire_lifecycle_event(Slic3r::LifecycleEvent::SlicingJobComplete, ctx);
     }

src/slic3r/plugin/PythonInterpreter.cpp

@@ -345,21 +345,16 @@ boost::filesystem::path find_bundled_python_home()
     fs::path bundle_python = fs::path(resources_dir()).parent_path() / "MacOS" / "python";
     if (valid_python_home(bundle_python))
         return bundle_python;
-#elif !defined(_WIN32)
+#elif defined(_WIN32)
+    fs::path exe_python = boost::dll::program_location().parent_path() / "python";
+    if (valid_python_home(exe_python))
+        return exe_python;
+#else
     fs::path linux_python = fs::path(resources_dir()).parent_path() / "lib" / "python";
     if (valid_python_home(linux_python))
         return linux_python;
 #endif
 
-    // Next to the executable: the Windows install layout, and the runtime copied
-    // beside every platform's unit-test binary (tests/slic3rutils/CMakeLists.txt).
-    // The CI test runner only receives the build/tests tree, so the candidates
-    // below -- all of which point into the deps or install trees -- never resolve
-    // there.
-    fs::path exe_python = boost::dll::program_location().parent_path() / "python";
-    if (valid_python_home(exe_python))
-        return exe_python;
-
     fs::path configured_python = ORCA_BUNDLED_PYTHON_ROOT;
     if (!configured_python.empty() && valid_python_home(configured_python))
         return configured_python;

tests/fff_print/test_print.cpp

@@ -15,6 +15,9 @@
 #include "libslic3r/Layer.hpp"
 #include "libslic3r/Model.hpp"
 #include "libslic3r/GCodeReader.hpp"
+#include "libslic3r/GCode/GCodeProcessor.hpp"
+#include "libslic3r/Exception.hpp"
+#include "libslic3r/LifecycleEvents.hpp"
 
 #include "test_helpers.hpp"
 #include "test_utils.hpp"
@@ -22,7 +25,10 @@
 #include <algorithm>
 #include <fstream>
 #include <iterator>
+#include <memory>
 #include <string_view>
+#include <utility>
+#include <vector>
 
 using namespace Slic3r;
 using namespace Slic3r::Test;
@@ -224,8 +230,88 @@ std::string resolved_output_name(Model& model, const std::string& format, const
     return print.output_filename(filename_base);
 }
 
+struct ScopedLifecycleHook
+{
+    explicit ScopedLifecycleHook(LifecycleHookFn hook) { set_lifecycle_hook_fn(std::move(hook)); }
+    ~ScopedLifecycleHook() { set_lifecycle_hook_fn(nullptr); }
+};
+
 } // namespace
 
+TEST_CASE("Slicing lifecycle events identify the model", "[Print][LifecycleEvents]")
+{
+    struct ObservedEvent {
+        LifecycleEvent event;
+        std::string id;
+        std::string name;
+    };
+    std::vector<ObservedEvent> events;
+    ScopedLifecycleHook hook([&](LifecycleEvent event, const LifecycleEventContext& ctx) {
+        events.push_back({ event, ctx.id, ctx.name });
+    });
+
+    Print print;
+    Model model;
+    ModelInfo info;
+    info.model_name = "Lifecycle test model";
+    model.model_info = std::make_shared<ModelInfo>(std::move(info));
+    init_print({cube(20)}, print, model);
+
+    print.process();
+    ScopedTemporaryFile temp(".gcode");
+    print.export_gcode(temp.string(), nullptr, nullptr);
+    GCodeProcessorResult result;
+    print.export_gcode_from_previous_file(temp.string(), &result);
+
+    const std::string expected_id = std::to_string(print.model().id().id);
+    const std::vector<LifecycleEvent> expected_events = {
+        LifecycleEvent::SliceStarted,
+        LifecycleEvent::SliceGeometryFinished,
+        LifecycleEvent::GCodeExportStarted,
+        LifecycleEvent::GCodeExportFinished,
+        LifecycleEvent::GCodeExportStarted,
+        LifecycleEvent::GCodeExportFinished,
+    };
+    REQUIRE(events.size() == expected_events.size());
+    for (size_t i = 0; i < expected_events.size(); ++i) {
+        CHECK(events[i].event == expected_events[i]);
+        CHECK(events[i].id == expected_id);
+        CHECK(events[i].name == "Lifecycle test model");
+    }
+}
+
+TEST_CASE("Slicing lifecycle event name is empty without model metadata", "[Print][LifecycleEvents]")
+{
+    std::string event_id;
+    std::string event_name = "unset";
+    ScopedLifecycleHook hook([&](LifecycleEvent event, const LifecycleEventContext& ctx) {
+        if (event == LifecycleEvent::SliceStarted) {
+            event_id = ctx.id;
+            event_name = ctx.name;
+        }
+    });
+
+    Print print;
+    Model model;
+    init_print({cube(20)}, print, model);
+    print.process();
+
+    CHECK(event_id == std::to_string(print.model().id().id));
+    CHECK(event_name.empty());
+}
+
+TEST_CASE("Output filenames with numeric statistics fail before slicing finishes", "[Print][Regression]")
+{
+    DynamicPrintConfig config = DynamicPrintConfig::full_print_config();
+    config.set_key_value("filename_format", new ConfigOptionString("{int(total_weight*10) / 10.0}"));
+
+    Print print;
+    Model model;
+    init_print({cube(20)}, print, model, config);
+
+    CHECK_THROWS_AS(print.output_filename(), PlaceholderParserError);
+}
+
 TEST_CASE("Print: {first_object_name} names the first printable object on the plate", "[Print]")
 {
     Model model;

tests/slic3rutils/CMakeLists.txt

@@ -49,16 +49,9 @@ if (WIN32)
         COMMENT "Copying Python runtime for slic3rutils plugin host API tests"
         VERBATIM
     )
-elseif (NOT FLATPAK)
-    # The CI unit-test runner only receives the build/tests tree, so both the
-    # interpreter and the libpython the test binary links have to travel next to
-    # the executable; find_bundled_python_home() picks the copy up from there.
-    if (APPLE)
-        target_link_options(${_TEST_NAME}_tests PRIVATE
-            "LINKER:-rpath,@executable_path/python/lib")
-    else ()
-        set_property(TARGET ${_TEST_NAME}_tests APPEND PROPERTY BUILD_RPATH "$ORIGIN/python/lib")
-    endif ()
+elseif (APPLE)
+    target_link_options(${_TEST_NAME}_tests PRIVATE
+        "LINKER:-rpath,@executable_path/python/lib")
 
     add_custom_command(TARGET ${_TEST_NAME}_tests POST_BUILD
         COMMAND ${CMAKE_COMMAND} -E rm -rf
@@ -66,7 +59,7 @@ elseif (NOT FLATPAK)
         COMMAND ${CMAKE_COMMAND} -E copy_directory
             "${CMAKE_PREFIX_PATH}/libpython"
             "$<TARGET_FILE_DIR:${_TEST_NAME}_tests>/python"
-        COMMENT "Copying Python runtime for the plugin host API tests"
+        COMMENT "Copying Python runtime for macOS plugin host API tests"
         VERBATIM
     )
 elseif (FLATPAK)
@@ -83,16 +76,4 @@ elseif (FLATPAK)
     )
 endif()
 
-# scripts/run_unit_tests.sh installs the tests' numpy into that runtime with this uv,
-# staged where the app build tree keeps it (<exe dir>/tools/uv, see src/CMakeLists.txt).
-if (ORCA_BUNDLED_UV_EXECUTABLE)
-    add_custom_command(TARGET ${_TEST_NAME}_tests POST_BUILD
-        COMMAND ${CMAKE_COMMAND} -E make_directory "$<TARGET_FILE_DIR:${_TEST_NAME}_tests>/tools/uv"
-        COMMAND ${CMAKE_COMMAND} -E copy_if_different "${ORCA_BUNDLED_UV_EXECUTABLE}"
-            "$<TARGET_FILE_DIR:${_TEST_NAME}_tests>/tools/uv/${ORCA_BUNDLED_UV_FILENAME}"
-        COMMENT "Copying uv for the plugin host API tests"
-        VERBATIM
-    )
-endif()
-
 orcaslicer_discover_tests(${_TEST_NAME}_tests)