subagent transcript

session 17f09f89 · workflow wf_6c234df9
← 17f09f89 · archive
delegated task
GOAL: port PySide6 + shiboken6 to the FreeCAD WebAssembly toolchain (static, no-dlopen, asyncify, no-pthreads) so FreeCAD's Python/PySide workbenches
▸ Magik
GOAL: port PySide6 + shiboken6 to the FreeCAD WebAssembly toolchain (static, no-dlopen, asyncify, no-pthreads) so FreeCAD's Python/PySide workbenches and macros work in the browser. This is the keystone dependency. Ground EVERYTHING in the real files — investigate, do not speculate. ESTABLISHED GROUND TRUTH (verified this session): - PySide+shiboken SOURCE: /tmp/pyside-setup (git branch 6.11, matches Qt). sources/shiboken6, sources/shiboken6_generator, sources/pyside6 (check exact dir names). Built via setup.py + coin_build_instructions.py OR raw CMake per sources/*/CMakeLists.txt + README.*.md at repo root. - HOST toolchain (x86-64 Linux): clang/llvm 21 with libclang at /usr/lib/llvm-21/lib/libclang.so (llvm-config = 21.1.8); host CPython 3.14.4 (/usr/bin/python3, headers /opt/toolchains/src/Python-3.14.4/Include); host Qt 6.11.1 at /opt/toolchains/qt/6.11.1/gcc_64. - TARGET (wasm): emscripten 4.0.12 (/opt/toolchains/emsdk); Qt 6.11.1 asyncify single-thread at /opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread (QT_FEATURE_thread == -1, i.e. -no-feature-thread); wasm CPython 3.14 at /opt/toolchains/python-wasm (headers include/python3.14, lib/python3.14.zip). FreeCAD-wasm build dir: /opt/toolchains/src/freecad-gui-build (reads Qt6_DIR=qt-asyncify/.../wasm_singlethread). - FreeCAD build links Python C-extensions STATICALLY and registers them via PyImport_AppendInittab in a generated src/Main/WasmInittab*.cpp (NO dlopen on wasm). PySide bindings must follow this model: build as STATIC libs, expose PyInit_* for each module (PySide6.QtCore etc.), register in the inittab. - FreeCAD source: /home/magik6k/lcad-wasm/freecad-port/FreeCAD (branch wasm-port). It ships a PySide shim at src/Ext/PySide (a compat layer) and uses shiboken (getCppPointer/wrapInstance) e.g. in Gui/PythonWrapper.cpp. FREECAD_USE_PYSIDE/FREECAD_USE_SHIBOKEN currently OFF. - KNOWN HARD ISSUES to design around: (1) static + NO dlopen — PySide's normal build emits shared modules; must emit static + inittab. (2) Qt is -no-feature-thread — shiboken typesystem for QtCore references QThread/QMutex/etc.; those must be excluded/guarded. (3) CPython 3.14 C-API changes vs what PySide 6.11 targets. (4) asyncify + JS-exceptions (-fexceptions) flags must match FreeCAD's; libshiboken/libpyside signal dispatch must be single-thread/asyncify safe. (5) binary size (wasm is already 196 MB; each Qt binding module is tens of MB — target ONLY the modules FreeCAD needs). DELIVERABLES — do BOTH: 1. Write a thorough, concrete, execution-ready plan to /home/magik6k/lcad-wasm/pyside-port/<SLUG>/plan.md with exact commands, cmake args, file paths, patch snippets (precise enough to apply), and any test outputs you gathered. Put patch/new-file contents as separate files in that dir. If you build/test something, capture the real output. 2. Return the structured summary (schema). Depth goes in plan.md; keep summary fields tight. Token cost is not a concern — be exhaustive and correct. Prefer running real commands (grep, ls, cmake --help, small test builds) over speculation. === YOUR SCOPE: Handle Qt -no-feature-thread in the shiboken typesystems (slug: qt-nothread-typesystem) === The wasm Qt is built -no-feature-thread (QT_FEATURE_thread=-1), so QThread/QMutex/QWaitCondition/QThreadPool/QThreadStorage/QReadWriteLock etc. are absent from the headers. shiboken's QtCore typesystem (sources/pyside6/PySide6/QtCore/typesystem_core*.xml) references these classes and will fail to bind (missing types). Enumerate exactly which typesystem entries reference thread types, and determine the fix: either remove/guard those <object-type>/<value-type> entries for the wasm build, or rely on shiboken skipping missing types. Grep the QtCore typesystem XMLs. Also check QtCore code that uses threads at runtime. Produce the precise typesystem patch (or a generation-time exclusion list). Create /home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/ and write plan.md (required) + any patches. Return the schema with deliverableFile=/home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/plan.md.
Fable
thinking
I need to dig into the QtCore typesystem XML files to find how thread types are defined.
Fable
⚙ Bash {"command": "ls /tmp/pyside-setup/sources/pyside6/PySide6/QtCore/ | head -50; echo \"---\"; ls /tmp/pyside-setup/sources/", "description": "List QtCore typesystem files"}
tool result
CMakeLists.txt
QtCore_global.post.h.in
glue
typesystem_core.xml
typesystem_core_common.xml
typesystem_core_win.xml
---
pyside-tools
pyside6
shiboken6
shiboken6_generator
Fable
⚙ Bash {"command": "mkdir -p /home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem", "description": "Create output dir"}
tool result
(Bash completed with no output)
Fable
thinking
I'm looking at the typesystem files to understand the thread-related type definitions.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/pyside6/PySide6/QtCore; grep -nE 'QThread|QMutex|QWaitCondition|QThreadPool|QThreadStorage|QReadWriteLock|QReadLocker|QWriteLocker|QMutexLocker|QSemaphore|QAtomic|QRunnable|QBasicMutex|QFuture|QThre…
tool result
typesystem_core_common.xml:1620:  <!-- QReadWriteLock does not have a copy ctor! -->
typesystem_core_common.xml:1625:  <object-type name="QReadWriteLock">
typesystem_core_common.xml:1630:  <object-type name="QReadLocker">
typesystem_core_common.xml:1632:    <modify-function signature="QReadLocker(QReadWriteLock*)">
typesystem_core_common.xml:1638:    <add-function signature="__enter__()" return-type="QReadLocker">
typesystem_core_common.xml:1645:  <object-type name="QWriteLocker">
typesystem_cor  …[truncated]
Fable
thinking
I need to dig deeper into the specific regions and check what feature guards are actually defined in the Qt headers to verify these classes are missing. Let me look at the typesystem_core_common.xml file to understand the relevant bindings.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/pyside6/PySide6/QtCore; sed -n '1615,1700p' typesystem_core_common.xml", "description": "Read locker/thread region"}
tool result
      <add-function signature="__exit__(PyObject*,PyObject*,PyObject*)">
          <inject-code file="../glue/qtcore.cpp" snippet="qsignalblocker-unblock"/>
      </add-function>
  </object-type>
  <value-type name="QStorageInfo"/>
  <!-- QReadWriteLock does not have a copy ctor! -->
  <object-type name="QBasicReadWriteLock" since="6.11">
    <modify-function signature="lockForRead()" allow-thread="yes"/>
    <modify-function signature="lockForWrite()" allow-thread="yes"/>
  </object-type>
  <ob  …[truncated]
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/pyside6/PySide6/QtCore; sed -n '2525,2700p' typesystem_core_common.xml", "description": "Read mutex/semaphore/waitcondition region"}
tool result
  </object-type>
  <object-type name="QLibraryInfo">
    <enum-type name="LibraryPath"/>
    <inject-code class="native" position="beginning"
                 file="../glue/qtcore.cpp" snippet="qlibraryinfo_python_build"/>
    <modify-function signature="build()">
        <inject-code class="target" position="end" file="../glue/qtcore.cpp" snippet="qlibraryinfo_build"/>
    </modify-function>
  </object-type>
  <namespace-type name="QtCoreHelper" visible="no">
    <object-type name="QMutexLocker  …[truncated]
Fable
thinking
I'm realizing the typesystem already guards thread-related types using a configuration condition that checks `QT_CONFIG(thread)`, which automatically excludes these types when threading is disabled. But I notice that QReadWriteLock and QBasicReadWriteLock are missing this guard, which could be the issue.
Fable
Key finding: many thread types already have `<configuration condition="QT_CONFIG(thread)"/>` guards. Let me check the ones that don't, and how shiboken handles this condition.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/pyside6/PySide6/QtCore; for n in QBasicReadWriteLock QReadWriteLock QThreadPool QRunnable QFutureInterfaceBase QThreadStorage QThreadPool; do echo \"=== $n ===\"; grep -n \"\\\"$n\\\"\" typesystem_c…
tool result
=== QBasicReadWriteLock ===
1621:  <object-type name="QBasicReadWriteLock" since="6.11">
=== QReadWriteLock ===
1625:  <object-type name="QReadWriteLock">
=== QThreadPool ===
3126:  <object-type name="QThreadPool">
=== QRunnable ===
3636:  <object-type name="QRunnable">
=== QFutureInterfaceBase ===
3209:  <object-type name="QFutureInterfaceBase">
=== QThreadStorage ===
=== QThreadPool ===
3126:  <object-type name="QThreadPool">
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/pyside6/PySide6/QtCore; sed -n '3120,3170p;3205,3230p;3630,3660p' typesystem_core_common.xml", "description": "Read QThreadPool/QFuture/QRunnable regions"}
tool result
  <object-type name="QSystemSemaphore">
    <configuration condition="#if QT_CONFIG(systemsemaphore)" />
    <enum-type name="AccessMode"/>
    <enum-type name="SystemSemaphoreError"/>
  </object-type>

  <object-type name="QThreadPool">
    <configuration condition="QT_CONFIG(thread)"/>
    <modify-function signature="clear()" allow-thread="yes"/>
    <modify-function signature="activeThreadCount()const" allow-thread="yes"/>
    <modify-function signature="releaseThread()" allow-thread="yes"/>
  …[truncated]
Fable
thinking
I'm trying to understand how shiboken's configuration condition mechanism works—specifically how it determines whether `QT_CONFIG(thread)` is true or false at generation time, and whether that causes types to be excluded from the bindings. I need to dig into the shiboken generator source to see how it evaluates these conditions. I've noticed that most thread-related types have this guard, but a couple are missing it, including QBasicReadWriteLock.
Fable
Most thread types already carry `<configuration condition="QT_CONFIG(thread)"/>`. The two exceptions are `QReadWriteLock` and `QBasicReadWriteLock`. Now let me understand how shiboken evaluates this condition.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources; grep -rn \"configuration\" shiboken6/ApiExtractor/ | grep -iE \"condition|QT_CONFIG|feature\" | head -40", "description": "Find configuration condition handling"}
tool result
ugrep: warning: shiboken6/ApiExtractor/: No such file or directory
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources; grep -rln \"TypeSystemConfiguration\\|configuration-condition\\|<configuration\" shiboken6/ | head; echo \"===\"; grep -rn \"QT_CONFIG\\|qtConfig\\|configCondition\\|conditionAttribute\\|m_configur…
tool result
shiboken6/doc/typesystem_manipulating_objects.rst
===
ugrep: warning: shiboken6/ApiExtractor/*.cpp: No such file or directory
ugrep: warning: shiboken6/ApiExtractor/*.h: No such file or directory
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources; find shiboken6 -maxdepth 2 -type d | head -40", "description": "Find shiboken dir structure"}
tool result
shiboken6
shiboken6/doc
shiboken6/config.tests
shiboken6/shibokenmodule
shiboken6/tests
shiboken6/libshiboken
shiboken6/cmake
shiboken6/data
shiboken6/doc/_static
shiboken6/doc/images
shiboken6/doc/_templates
shiboken6/doc/scripts
shiboken6/doc/_themes
shiboken6/doc/examples
shiboken6/config.tests/target_qt_info
shiboken6/config.tests/target_qt_mkspec
shiboken6/config.tests/target_python_info
shiboken6/shibokenmodule/files.dir
shiboken6/tests/samplebinding
shiboken6/tests/shibokenmodule
shiboken  …[truncated]
Fable
thinking
I need to check the shiboken6_generator directory for the ApiExtractor.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources; find shiboken6_generator -maxdepth 2 -type d | grep -i \"apiextr\\|ApiExtractor\"; echo \"---files---\"; ls shiboken6_generator/ApiExtractor/ 2>/dev/null | head; find shiboken6_generator -name \"*.…
tool result
shiboken6_generator/ApiExtractor
shiboken6_generator/ApiExtractor/tests
shiboken6_generator/ApiExtractor/clangparser
shiboken6_generator/ApiExtractor/parser
---files---
AUTHORS
CMakeLists.txt
COPYING
abstractmetaargument.cpp
abstractmetaargument.h
abstractmetabuilder.cpp
abstractmetabuilder.h
abstractmetabuilder_helpers.cpp
abstractmetabuilder_p.h
abstractmetabuilder_testutil.cpp
shiboken6_generator/ApiExtractor/messages.cpp
shiboken6_generator/ApiExtractor/typesystemparser.cpp
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/ApiExtractor; grep -rn \"configuration\\|QT_CONFIG\\|conditio\" typesystemparser.cpp typesystem.h typesystem.cpp 2>/dev/null | grep -i \"condit\\|qt_config\\|configuration\" | he…
tool result
typesystemparser.cpp:28:#include "conditionalstreamreader.h"
typesystemparser.cpp:464:        {u"configuration", StackElement::Configuration},
typesystemparser.cpp:2009:        m_error = u"<configuration> must be nested into a complex or enum type entry."_s;
typesystemparser.cpp:2012:    QString condition;
typesystemparser.cpp:2015:        if (name == u"condition") {
typesystemparser.cpp:2016:            condition = attributes->takeAt(i).value().toString();
typesystemparser.cpp:2019:    if (cond  …[truncated]
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/ApiExtractor; grep -rn \"ConfigCondition\\|configCondition\\|configComplexTypes\\|writeConfiguration\\|generateConfig\\|QT_CONFIG\" *.cpp *.h | head -40", "description": "Find co…
tool result
messages.cpp:403:    const bool hasConfigCondition = entry->isComplex()
messages.cpp:404:        && std::static_pointer_cast<const ConfigurableTypeEntry>(entry)->hasConfigCondition();
messages.cpp:407:    if (hasConfigCondition)
typesystem.cpp:1175:    QString m_configCondition;
typesystem.cpp:1196:QString ConfigurableTypeEntry::configCondition() const
typesystem.cpp:1199:    return d->m_configCondition;
typesystem.cpp:1202:void ConfigurableTypeEntry::setConfigCondition(const QString &c)
typesys  …[truncated]
Fable
thinking
The config condition gets converted into a preprocessor guard that wraps the type binding code in the generated C++, so when the feature is disabled at compile time, that entire section is excluded. I'm looking for where the generator actually uses this configCondition to confirm this mechanism is working as expected.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator; grep -rn \"configCondition\\|hasConfigCondition\\|ConfigCondition\" generator/ | head -40", "description": "Find config condition in generator"}
tool result
generator/shiboken/configurablescope.h:18:        m_hasConfigCondition(t->hasConfigCondition())
generator/shiboken/configurablescope.h:20:        if (m_hasConfigCondition)
generator/shiboken/configurablescope.h:21:            m_stream << t->configCondition() << '\n';
generator/shiboken/configurablescope.h:26:        if (m_hasConfigCondition)
generator/shiboken/configurablescope.h:32:    const bool m_hasConfigCondition;
generator/shiboken/headergenerator.cpp:803:            if (te->hasConfigCondi  …[truncated]
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; sed -n '1,45p' configurablescope.h", "description": "Read configurablescope.h"}
tool result
// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#ifndef CONFIGURABLESCOPE_H
#define CONFIGURABLESCOPE_H

#include <textstream.h>
#include <configurabletypeentry.h>

/// Enclose a scope within preprocessor conditions for configurable entries
class ConfigurableScope
{
public:
    Q_DISABLE_COPY_MOVE(ConfigurableScope)

    explicit ConfigurableScope(TextStream &s, const ConfigurableTypeEntryCPtr &t) :
         …[truncated]
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; grep -rn \"ConfigurableScope\\|configCondition\" cppgenerator.cpp | head", "description": "Find ConfigurableScope usage in cppgenerator"}
tool result
cppgenerator.cpp:1730:    ConfigurableScope configScope(s, enumType);
cppgenerator.cpp:5600:        ConfigurableScope configScope(s, cppEnum.typeEntry());
cppgenerator.cpp:7043:            ConfigurableScope configScope(s, metaEnum.typeEntry());
cppgenerator.cpp:7090:            ConfigurableScope configScope(s, cls->typeEntry());
Fable
thinking
The generated code conditionally compiles class registration using preprocessor directives, so when threading is disabled, the type registration is skipped entirely. Even though the per-class wrapper file gets generated and included in the build, its entire contents are wrapped in the same conditional, meaning it effectively becomes empty when the feature is disabled.

Now I need to trace through the actual scope of what ConfigurableScope guards — whether it wraps just the registration call in the main module file or the entire generated wrapper file for the class, and I should look at the surrounding context to understand the full picture.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; sed -n '7030,7100p' cppgenerator.cpp", "description": "Read context around configScope usage"}
tool result
         << outdent << "} else {\n" << indent;
      // Multi-phase initialization (exec() will be called by CPython).
      s  << "module = PyModuleDef_Init(&" << moduleDef << ");\n" << outdent << "}\n"
         << "return module;\n" << outdent << "}\n\n";
}

void CppGenerator::writeQtEnumRegisterMetaTypeFunction(TextStream &s,
                                                       const QString &name,
                                                       const AbstractMetaEnumList &globalEnum  …[truncated]
Fable
thinking
I need to trace through the code generation to see how per-class wrapper files are guarded and where the registration happens. Let me search the cppgenerator for where class-specific registration code gets written, particularly looking at how ConfigurableScope fits into the wrapper generation pipeline.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; grep -n \"ConfigurableScope\\|configCondition\\|hasConfigCondition\\|#if\\|generateClass\\|void CppGenerator::generateClass\\|writeClassRegister\\|SbkObjectTy…
tool result
670:void CppGenerator::generateClass(TextStream &s,
967:    writeClassRegister(s, metaClass, classContext, signatureStream);
1730:    ConfigurableScope configScope(s, enumType);
5600:        ConfigurableScope configScope(s, cppEnum.typeEntry());
5951:void CppGenerator::writeClassRegister(TextStream &s,
7043:            ConfigurableScope configScope(s, metaEnum.typeEntry());
7090:            ConfigurableScope configScope(s, cls->typeEntry());
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; sed -n '5951,6010p' cppgenerator.cpp", "description": "Read writeClassRegister start"}
tool result
void CppGenerator::writeClassRegister(TextStream &s,
                                      const AbstractMetaClassCPtr &metaClass,
                                      const GeneratorContext &classContext,
                                      const QString &signatures) const
{
    ComplexTypeEntryCPtr classTypeEntry = metaClass->typeEntry();

    AbstractMetaClassCPtr enc = metaClass->targetLangEnclosingClass();
    QString enclosingObjectVariable = enc ? u"enclosingClass"_s : u"module"_s;

    …[truncated]
Fable
thinking
I'm checking how the generateClass function wraps the entire wrapper .cpp file within the config condition, and whether the per-class file's register function is properly guarded by ConfigurableScope at the point where it's written.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; sed -n '670,700p' cppgenerator.cpp; echo \"...======955-970======\"; sed -n '940,970p' cppgenerator.cpp", "description": "Read generateClass top and end"}
tool result
void CppGenerator::generateClass(TextStream &s,
                                 const QString & /* targetDir */,
                                 const GeneratorContext &classContext,
                                 QList<GeneratorContext> *)
{
    s.setLanguage(TextStream::Language::Cpp);
    const AbstractMetaClassCPtr &metaClass = classContext.metaClass();
    const auto typeEntry = metaClass->typeEntry();

    warnAboutTypes(metaClass);

    auto innerClasses = metaClass->innerClasses();
   …[truncated]
Fable
thinking
I'm noticing that the wrapper .cpp file for QThread isn't wrapped in the `#if QT_CONFIG(thread)` guard, which means it would still try to include and reference QThread even when the thread feature is disabled — that shouldn't compile. But this is how PySide normally builds anyway since QT_CONFIG(thread) is typically enabled, so there must be something else going on here.

Actually, I think I see it now: the header parser using clang won't even see QThread when the thread feature is off, because qthread.h itself is guarded with `#if QT_CONFIG(thread)`. So shiboken's AbstractMetaBuilder won't find the type at all and simply won't generate a wrapper for it in the first place, emitting a warning  …
Fable
The per-class wrapper body isn't wholesale-guarded. The real question is whether the header actually hides the class (so shiboken skips it) and whether the module-level references are guarded. Let me verify the Qt headers hide these classes and check the module registration path.
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; echo \"=== qconfig thread feature ===\"; grep -rn \"QT_FEATURE_thread\\b\\|QT_FEATURE_future\\b\\|QT_FEATURE_cxx11_future\" $Q/include/QtCore/qtcore-config.h 2>/dev/null; …
tool result
=== qconfig thread feature ===
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qtcore-config.h:6:#define QT_FEATURE_cxx11_future 1
=== qthread.h guard ===
6:#ifndef QTHREAD_H
16:#if defined(Q_CC_MSVC) && defined(Q_PROCESSOR_X86)
28:class Q_CORE_EXPORT QThread : public QObject
=== does qmutex class exist unconditionally? ===
17:#if QT_CONFIG(thread) || defined(Q_QDOC)
311:#else // !QT_CONFIG(thread) && !Q_QDOC
362:#endif // !QT_CONFIG(thread) && !Q_QDOC
Fable
thinking
I need to verify the actual state of QT_FEATURE_thread since it's showing as -1 in memory but not appearing in qtcore-config.h. More importantly, I'm noticing that QThread is defined unconditionally in qthread.h without any QT_CONFIG(thread) guards, which means the class exists regardless of whether threading is configured.

Looking at qmutex.h, there's a conditional compilation at line 17 with QT_CONFIG(thread) that branches to a stub implementation when threading is disabled, but the class itself still exists. I should check what that else branch looks like and confirm the actual QT_FEATURE_thread value.
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; echo \"=== search QT_FEATURE_thread across config headers ===\"; grep -rn \"QT_FEATURE_thread\\b\" $Q/include/QtCore/ 2>/dev/null; echo; echo \"=== QT_FEATURE_future / thr…
tool result
=== search QT_FEATURE_thread across config headers ===
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qconfig.h:48:#define QT_FEATURE_thread -1

=== QT_FEATURE_future / thread in qtcore-config ===
6:#define QT_FEATURE_cxx11_future 1
Fable
thinking
So QT_FEATURE_thread is disabled, which means QT_CONFIG(thread) returns false. The QThread class itself is declared unconditionally in qthread.h without any preprocessor guards around it, though I should double-check if there are guards protecting specific methods inside the class definition.
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; echo \"=== qthread.h QT_CONFIG usage ===\"; grep -nE \"QT_CONFIG|#if|#else|#endif|class Q_CORE\" $Q/include/QtCore/qthread.h; echo; echo \"=== line count ===\"; wc -l $Q/i…
tool result
=== qthread.h QT_CONFIG usage ===
6:#ifndef QTHREAD_H
16:#if defined(Q_CC_MSVC) && defined(Q_PROCESSOR_X86)
18:#endif
28:class Q_CORE_EXPORT QThread : public QObject
167:#if defined(Q_PROCESSOR_X86_32) && ((defined(Q_OS_LINUX) && defined(__GLIBC__)) || defined(Q_OS_FREEBSD)) // x86 32-bit always uses GS
184:#else
187:#endif
193:#endif // QTHREAD_H

=== line count ===
193 /opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qthread.h
Fable
thinking
QThread is defined unconditionally regardless of the thread feature flag, so the class itself always exists. I need to examine the class definition in qthread.h to see what methods are available, since the typesystem references rely on methods like start() and run().
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; sed -n '28,166p' $Q/include/QtCore/qthread.h", "description": "Read QThread class body"}
tool result
class Q_CORE_EXPORT QThread : public QObject
{
    Q_OBJECT
public:
    Q_DECL_PURE_FUNCTION static Qt::HANDLE currentThreadId() noexcept;
    static QThread *currentThread();
    static bool isMainThread() noexcept;
    static int idealThreadCount() noexcept;
    static void yieldCurrentThread();

    explicit QThread(QObject *parent = nullptr);
    ~QThread();

    enum Priority {
        IdlePriority,

        LowestPriority,
        LowPriority,
        NormalPriority,
        HighPriority,
  …[truncated]
Fable
thinking
QThread remains fully available even with threading disabled since it's integral to the event loop, so the typesystem binding should work without issues. QMutex, however, uses conditional compilation with `#if QT_CONFIG(thread)` to provide either a full implementation or a stub, so I need to examine what methods are actually available in the stub version to understand the binding constraints.
Fable
Major finding: QThread is a full class even with thread feature off. Let me check the mutex/lock/semaphore headers' `#else` stub branches to see what's actually available.
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; echo \"########## qmutex.h #else (thread off) branch ##########\"; sed -n '311,362p' $Q/include/QtCore/qmutex.h", "description": "Read qmutex.h thread-off stub"}
tool result
########## qmutex.h #else (thread off) branch ##########
#else // !QT_CONFIG(thread) && !Q_QDOC

class QMutex
{
public:

    constexpr QMutex() noexcept { }

    inline void lock() noexcept {}
    inline bool tryLock(int timeout = 0) noexcept { Q_UNUSED(timeout); return true; }
    inline bool try_lock() noexcept { return true; }
    inline void unlock() noexcept {}

    template <class Rep, class Period>
    inline bool try_lock_for(std::chrono::duration<Rep, Period> duration) noexcept
    {
    …[truncated]
Fable
thinking
Looking at the thread-off build configuration, the QMutex stub has a different method signature than the full version, specifically including `tryLock(int)` which the typesystem references and modifies. The stub doesn't expose all methods from the complete implementation, but the typesystem only needs to override `tryLock(int)`, which is present. QRecursiveMutex inherits from QMutex as an empty subclass, so it inherits the stub's method set.

QBasicMutex is just a typedef to QMutex rather than a real class, and while the typesystem declares it as an object-type, the configCondition guard skips it during the thread-off build. QMutexLocker is a template in the stub, but the typesystem actually  …
Fable
QMutex etc. are stubbed (different signatures) with `QT_CONFIG(thread)` guards. The typesystem guards exist to match. Now let me check the two entries that LACK guards — `QReadWriteLock`/`QBasicReadWriteLock` — and whether those classes exist in the thread-off headers.
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; echo \"=== qreadwritelock.h structure ===\"; grep -nE \"QT_CONFIG|#if|#else|#endif|class Q_CORE_EXPORT QReadWriteLock|class Q_CORE_EXPORT QReadLocker|class Q_CORE_EXPORT Q…
tool result
=== qreadwritelock.h structure ===
5:#ifndef QREADWRITELOCK_H
14:#if QT_CONFIG(thread)
16:class QReadWriteLockPrivate;
18:class QBasicReadWriteLock
21:    constexpr QBasicReadWriteLock() = default;
57:#ifdef QT_BUILDING_UNDER_TSAN
60:#endif
136:    constexpr QBasicReadWriteLock(QReadWriteLockPrivate *d) noexcept : d_ptr(d)
138:    Q_DISABLE_COPY(QBasicReadWriteLock)
140:    friend class QReadWriteLockPrivate;
143:class QT6_ONLY(Q_CORE_EXPORT) QReadWriteLock : public QBasicReadWriteLock
153:#if Q  …[truncated]
Fable
thinking
I see there's a conditional compilation structure in the header file with thread support enabled at line 14 and a fallback stub implementation starting at line 311. Let me check what the non-threaded versions of these classes look like to understand the API contract.
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; sed -n '311,366p' $Q/include/QtCore/qreadwritelock.h", "description": "Read qreadwritelock.h thread-off stub"}
tool result
#else // QT_CONFIG(thread)

class QT6_ONLY(Q_CORE_EXPORT) QReadWriteLock
{
public:
    enum RecursionMode { NonRecursive, Recursive };
    inline explicit QReadWriteLock(RecursionMode = NonRecursive) noexcept { }
    inline ~QReadWriteLock() { }

    void lockForRead() noexcept { }
    bool tryLockForRead() noexcept { return true; }
    bool tryLockForRead(QDeadlineTimer) noexcept { return true; }
    bool tryLockForRead(int timeout) noexcept { Q_UNUSED(timeout); return true; }

    void lockFor  …[truncated]
Fable
thinking
Looking at the thread-off stub, QReadWriteLock is defined standalone without deriving from QBasicReadWriteLock, since QBasicReadWriteLock only exists in the QT_CONFIG(thread) branch. However, in the typesystem, QBasicReadWriteLock appears as an object type at line 1621 without any config condition, which creates a mismatch between the stub and the type definitions.

When shiboken processes this, it will emit a warning that QBasicReadWriteLock isn't found and skip its generation, but since the stub's QReadWriteLock doesn't inherit from it, no generated code actually references it—so it's harmless, though adding a config guard would be cleaner. Meanwhile, QReadWriteLock itself at line 1625 doe  …
Fable
Now let me verify: whether "type not found" is fatal in shiboken, check `QT_FEATURE_future`, and scan for any other thread references (glue code, other typesystem files).
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; echo \"=== future/concurrent features ===\"; grep -nE \"QT_FEATURE_future|QT_FEATURE_concurrent\" $Q/include/QtCore/qtcore-config.h; echo; echo \"=== other QtCore typesyst…
tool result
=== future/concurrent features ===

=== other QtCore typesystem xmls referencing thread ===

=== glue qtcore.cpp thread snippets ===
ugrep: warning: glue/qtcore.cpp: No such file or directory
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; echo \"=== grep future/concurrent in all core config headers ===\"; grep -rnE \"QT_FEATURE_future|QT_FEATURE_concurrent\" $Q/include/QtCore/*.h; echo; echo \"=== glue loca…
tool result
=== grep future/concurrent in all core config headers ===
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qconfig.h:50:#define QT_FEATURE_future 1
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qconfig.h:52:#define QT_FEATURE_concurrent 1

=== glue location ===
core_snippets.cpp
core_snippets_p.h
qeasingcurve_glue.cpp
qeasingcurve_glue.h
qiopipe.cpp
qtcorehelper.cpp
=== thread usage in glue ===
ugrep: warning: /tmp/pyside-setup/sources/pyside6/PySide6/QtC  …[truncated]
Fable
thinking
QFuture types are available even in the thread-disabled wasm build since they rely on std::future which works fine in single-threaded mode via deferred execution, so the QT_CONFIG guards won't exclude them. The glue file referenced in the typesystem is actually located in the core directory rather than where the path suggests.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/pyside6/PySide6; find . -name \"qtcore.cpp\" -path \"*glue*\"; echo \"---all glue qtcore---\"; find . -path \"*glue*qtcore*\"; echo \"=== thread snippets in the real glue file ===\"; f=$(find . -nam…
tool result
./glue/qtcore.cpp
---all glue qtcore---
./glue/qtcore.cpp
./QtCore/glue/qtcorehelper.cpp
=== thread snippets in the real glue file ===
file: ./glue/qtcore.cpp
1353:// @snippet qthread_init_pypy
1360:// @snippet qthread_init_pypy
1362:// @snippet qthread_exec_
1373:int cppResult = static_cast<::QThreadWrapper *>(cppSelf)->QThreadWrapper::exec_protected();
1377:// @snippet qthread_exec_
1716:// @snippet qthread_pthread_cleanup
1718:#  include <pthread.h>
1719:static void qthread_pthread_cleanup(vo  …[truncated]
Fable
thinking
I'm noticing a potential issue with how the QThread binding is being generated — the wrapper code snippets are being injected through the typesystem, but even though QThread registration is conditionally compiled with `#if QT_CONFIG(thread)`, the wrapper file itself might still be generated unconditionally, which could cause problems.

Let me check the actual snippet definitions to see if they're already guarded. Looking at the pthread cleanup snippet around lines 1714-1745, I can see there's already a `#if` directive wrapping the pthread includes, so the code should be protected even if the wrapper file is generated unconditionally.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/pyside6/PySide6; sed -n '1714,1745p' glue/qtcore.cpp", "description": "Read qthread pthread cleanup snippet guards"}
tool result
// @snippet return-qjsonobject

// @snippet qthread_pthread_cleanup
#ifdef Q_OS_UNIX
#  include <pthread.h>
static void qthread_pthread_cleanup(void *arg)
{
    // PYSIDE 1282: When terminating a thread using QThread::terminate()
    // (pthread_cancel()), QThread::run() is aborted and the lock is released,
    // but ~GilState() is still executed for some reason. Prevent it from
    // releasing.
    auto gil = reinterpret_cast<Shiboken::GilState *>(arg);
    gil->abandon();
}
#endif // Q_OS_UN  …[truncated]
Fable
thinking
I'm wondering whether the pthread code is actually protected on emscripten since it defines Q_OS_WASM rather than Q_OS_UNIX, though QThread itself has its own guards so this might be a secondary issue. The real question is whether the wrapper file itself is guarded, which I should be able to determine by checking for a "generateClass" wrapping.

The key thing to verify is how PySide handles the wasm/no-thread build — specifically whether the module initialization file that calls all the class init functions, and the types array in the header, are properly guarded with ConfigurableScope. If the module references an init function for QThread but that function is compiled out, I'd get a linker   …
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; grep -n \"ConfigurableScope\\|TypeInitStruct\\|writeInitFunc\\|init_\\|_TypeF\\b\\|initFunctionName\\|writeInitInheritance\\|lazyInit\\|typeInitStruct\" cppge…
tool result
64:static constexpr auto initFuncPrefix = "init_"_L1;
66:static constexpr auto sbkObjectTypeF = "SbkObject_TypeF()"_L1;
1730:    ConfigurableScope configScope(s, enumType);
2408:        << typeInitStruct(classContext) << ");\n"
2778:        const QString &name = rfunc->isConstructor() ? "__init__"_L1 : rfunc->name();
2782:        result += typeInitStruct(context);
3686:        inType = u'(' + toNative.sourceTypeName() + u"_TypeF())"_s;
4591:QString CppGenerator::typeInitStructHelper(const TypeEn  …[truncated]
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; sed -n '6483,6535p' cppgenerator.cpp; echo \"====== 6940-6990 cppApi array ======\"; sed -n '6940,6990p' cppgenerator.cpp", "description": "Read writeInitFunc…
tool result
static void writeInitFuncDecl(TextStream &declStr,
                              const QString &functionName)
{
    declStr << "PyTypeObject *" << functionName  << "(PyObject *enclosing);\n";
}

// Write declaration and invocation of the init function for the module init
// function.
void CppGenerator::writeInitFuncCall(TextStream &callStr,
                                     const QString &functionName,
                                     const TypeEntryCPtr &enclosingEntry,
                   …[truncated]
Fable
thinking
I need to check whether `writeClassCode` wraps each class's initialization function call in a ConfigurableScope, and understand how this applies to classes with a configCondition that are actually generated versus those that aren't found at all.

For classes like QThread that exist and get generated, the wrapper's init function is created unconditionally, but its registration into the lazy creation function and cppApi array should be guarded by the configCondition. The type array itself is written unconditionally in `writeTypeArrays` without ConfigurableScope, so the slot for QThread always exists in the array. If the registration call is guarded out, the slot just stays null and never gets   …
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; grep -n \"writeClassCode\" cppgenerator.cpp | head; echo \"---\"; sed -n '/void CppGenerator::writeClassCode/,/^}/p' cppgenerator.cpp | head -60", "descriptio…
tool result
721:        writeClassCodeSnips(s, typeEntry->codeSnips(),
974:        writeClassCodeSnips(s, typeEntry->codeSnips(),
6049:        writeClassCodeSnips(s, classTypeEntry->codeSnips(),
6092:        writeClassCodeSnips(s, classTypeEntry->codeSnips(),
6353:        writeClassCodeSnips(s, func->injectedCodeSnips(), TypeSystem::CodeSnipPositionAny,
6437:        writeClassCodeSnips(s, func->injectedCodeSnips(), TypeSystem::CodeSnipPositionAny,
6518:    writeClassCode(s, classFunc);
6616:    const bool h  …[truncated]
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; grep -n \"::writeClassCode\\b\\|bool CppGenerator::writeClassCode\\|writeClassCode(TextStream\" cppgenerator.cpp cppgenerator.h; echo \"---body---\"; awk '/Cp…
tool result
---body---
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; grep -rn \"writeClassCode\" *.h *.cpp | grep -v \"writeClassCodeSnips\\|writeClassCode(s\"; echo \"=== maybe template in header ===\"; grep -n \"writeClassCod…
tool result
shibokengenerator.h:380:    bool writeClassCode(TextStream &s, F f) const;
shibokengenerator_tpl.h:16:bool ShibokenGenerator::writeClassCode(TextStream &s, F f) const
=== maybe template in header ===
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/generator/shiboken; sed -n '1,70p' shibokengenerator_tpl.h", "description": "Read writeClassCode template"}
tool result
// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#ifndef SHIBOKENGENERATOR_TPL_H
#define SHIBOKENGENERATOR_TPL_H

#include "shibokengenerator.h"
#include "apiextractorresult.h"
#include "abstractmetalang.h"
#include "complextypeentry.h"
#include "configurablescope.h"

#include <textstream.h>

template <class F>
bool ShibokenGenerator::writeClassCode(TextStream &s, F f) const
{
    bool result = false;
    fo  …[truncated]
Fable
thinking
So `writeClassCode` wraps the generated code for each class—both the init function declarations and the AddTypeCreationFunction calls—inside a `ConfigurableScope` guard like `#if QT_CONFIG(thread)`. This means for guarded classes, both the init function declaration and the type creation function call get protected by the same conditional. However, the wrapper .cpp file defines the init function unconditionally, without the guard.

The real concern is when a guarded class doesn't actually exist in the type system—like QBasicReadWriteLock. In that case, the class won't appear in the API at all, and shiboken just emits a warning that the type was specified in the typesystem but not found. That   …
Fable
`writeClassCode` wraps every class's registration in `ConfigurableScope` (the `#if QT_CONFIG(thread)`). The mechanism is confirmed. Now let me check whether a "type not found" (for QBasicReadWriteLock) is fatal or just a warning, and how it interacts with configCondition.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/shiboken6_generator/ApiExtractor; sed -n '395,420p' messages.cpp; echo \"=== where is this message emitted / severity ===\"; grep -rn \"specified in typesystem\\|but not defined\\|msgClassNotFound\\…
tool result
static const char msgCompilationError[] =
    "This could potentially lead to compilation errors.";

QString msgTypeNotDefined(const TypeEntryCPtr &entry)
{
    QString result;
    QTextStream str(&result);
    const bool hasConfigCondition = entry->isComplex()
        && std::static_pointer_cast<const ConfigurableTypeEntry>(entry)->hasConfigCondition();
    str << entry->sourceLocation() << "type '" <<entry->qualifiedCppName()
        << "' is specified in typesystem, but not defined";
    if (  …[truncated]
Fable
thinking
The `msgTypeNotDefined` message uses `hasConfigCondition` to distinguish between two scenarios: when a type lacks a definition but has a config condition, it notes this as potentially disabled by configuration, but when there's no config condition at all, it warns about likely compilation errors. This reveals the core purpose of the configCondition system—to differentiate between intentionally disabled types and genuinely missing definitions.

For QBasicReadWriteLock, the fix is straightforward: add the thread configuration condition so it's properly marked as disabled rather than flagged as a risky unguarded type. For QReadWriteLock, it's more nuanced—while it exists as a stub in thread-off  …
Fable
This is conclusive. The `msgTypeNotDefined` code explicitly treats `configCondition` as the sanctioned way to handle types "disabled by configuration" — the entire mechanism exists for exactly this scenario. Let me produce the authoritative guard-status table for every thread-related entry.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup/sources/pyside6/PySide6/QtCore; python3 - <<'PY'\nimport re\ntxt=open('typesystem_core_common.xml').read().splitlines()\n# find object-type/value-type blocks and whether they contain configuration condition…
tool result
L 1621 QBasicReadWriteLock    guard=None
L 1625 QReadWriteLock         guard=None
L 1630 QReadLocker            guard=QT_CONFIG(thread)
L 1645 QWriteLocker           guard=QT_CONFIG(thread)
L 1663 QThread                guard=QT_CONFIG(thread)
L 2535 QMutexLocker           guard=QT_CONFIG(thread)
L 2588 QBasicMutex            guard=QT_CONFIG(thread)
L 2595 QMutex                 guard=QT_CONFIG(thread)
L 2599 QRecursiveMutex        guard=QT_CONFIG(thread)
L 2613 QSemaphore             guard=QT_C  …[truncated]
Fable
thinking
Looking at the table, QBasicReadWriteLock and QReadWriteLock are the only unguarded classes. I've confirmed that QBasicReadWriteLock doesn't exist in the thread-off stub, while QReadWriteLock does, so I need to add a thread configuration guard to QBasicReadWriteLock.

For QReadWriteLock, I'm weighing whether to guard it too. Since its RAII lockers (QReadLocker/QWriteLocker) are already guarded, guarding QReadWriteLock itself would be consistent. However, leaving it unguarded means Python gets a functional no-op version on wasm, which could be better for compatibility—though that comes at the cost of missing the locker classes. I'll present guarding as recommended but note that leaving it ung  …
Fable
The picture is complete and authoritative. Let me do two final confirmations: that `QBasicReadWriteLock` truly is absent in the thread-off headers (so it's the one that triggers the "compile errors" warning), and check the typesystem documentation for the `<configuration>` element to cite the intended usage.
Fable
⚙ Bash {"command": "Q=/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread; echo \"=== QBasicReadWriteLock defined anywhere in thread-off-visible code? ===\"; grep -rn \"class.*QBasicReadWriteLock\\|QBasicReadWriteLock\" $Q/include/QtCore/qreadwri…
tool result
=== QBasicReadWriteLock defined anywhere in thread-off-visible code? ===
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qreadwritelock.h:18:class QBasicReadWriteLock
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qreadwritelock.h:21:    constexpr QBasicReadWriteLock() = default;
/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread/include/QtCore/qreadwritelock.h:136:    constexpr QBasicReadWriteLock(QReadWriteLockPrivate *d) noexcept : d_ptr(d)
/opt/tool  …[truncated]
Fable
thinking
QBasicReadWriteLock is only defined within the thread-enabled configuration block, so it's missing entirely when threading is disabled. I need to add a guard around it to prevent compilation errors and avoid any dangling base class references in the thread-off scenario.

QReadWriteLock exists as a stub in the thread-off case, so it compiles fine without a guard, but I'll add one for consistency.

Now I'm writing out the plan document and creating the unified diff patch file with the exact indentation and XML structure from the source.
Fable
Everything is confirmed. `QBasicReadWriteLock` is only defined inside the `#if QT_CONFIG(thread)` branch, so it is absent in the wasm build and its unguarded typesystem entry triggers the "could lead to compilation errors" warning. Let me write the deliverables.
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup && git log --oneline -1 2>/dev/null; git rev-parse --abbrev-ref HEAD 2>/dev/null; echo \"---\"; sed -n '1619,1629p' sources/pyside6/PySide6/QtCore/typesystem_core_common.xml | cat -A | head -20", "descripti…
tool result
cc7c88a Type hints: Fix Stacked currentWidget return type hint
6.11
---
  <value-type name="QStorageInfo"/>$
  <!-- QReadWriteLock does not have a copy ctor! -->$
  <object-type name="QBasicReadWriteLock" since="6.11">$
    <modify-function signature="lockForRead()" allow-thread="yes"/>$
    <modify-function signature="lockForWrite()" allow-thread="yes"/>$
  </object-type>$
  <object-type name="QReadWriteLock">$
    <enum-type name="RecursionMode"/>$
    <modify-function signature="tryLockForRea  …[truncated]
Fable
Now let me write the patch file and the plan.
Fable
⚙ Write {"file_path": "/home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/0001-qtcore-guard-readwritelock-nothread.patch", "content": "From: FreeCAD wasm port\nSubject: [PATCH] QtCore typesystem: guard QBasicReadWriteLock/QReadWriteLock\n b…
tool result
File created successfully at: /home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/0001-qtcore-guard-readwritelock-nothread.patch (file state is current in your context — no need to Read it back)
Fable
thinking
I should write a Python script that applies the changes using anchor-based matching instead of relying on line numbers, which would be more robust if the file has drifted.
Fable
⚙ Write {"file_path": "/home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/apply_guard.py", "content": "#!/usr/bin/env python3\n\"\"\"Idempotent, line-number-independent application of the QtCore no-thread guard.\n\nAdds <configuration condi…
tool result
File created successfully at: /home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/apply_guard.py (file state is current in your context — no need to Read it back)
Fable
⚙ Bash {"command": "cd /tmp/pyside-setup && cp sources/pyside6/PySide6/QtCore/typesystem_core_common.xml /tmp/ts_backup.xml && python3 /home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/apply_guard.py /tmp/pyside-setup && echo \"=== verify…
tool result
Patched /tmp/pyside-setup/sources/pyside6/PySide6/QtCore/typesystem_core_common.xml: inserted 2 guard(s).
=== verify ===
  <!-- QReadWriteLock does not have a copy ctor! -->
  <object-type name="QBasicReadWriteLock" since="6.11">
    <configuration condition="QT_CONFIG(thread)"/>
    <modify-function signature="lockForRead()" allow-thread="yes"/>
    <modify-function signature="lockForWrite()" allow-thread="yes"/>
  </object-type>
  <object-type name="QReadWriteLock">
    <configuration conditio  …[truncated]
Fable
thinking
The patch applies cleanly with well-formed XML and is idempotent, so I'm considering whether to restore the backup to avoid interfering with other subagents who might be working with the pristine source, though leaving it patched is probably the right call since this is the actual fix we need.
Fable
Patch applies cleanly, XML validates, and it's idempotent. Let me restore the pristine source so concurrent subagents aren't surprised (the patch/script are the deliverable), then verify the restore.
Fable
⚙ Bash {"command": "cp /tmp/ts_backup.xml /tmp/pyside-setup/sources/pyside6/PySide6/QtCore/typesystem_core_common.xml && grep -c \"configuration condition=\\\"QT_CONFIG(thread)\\\"\" /tmp/pyside-setup/sources/pyside6/PySide6/QtCore/typesystem_core…
tool result
12
restored (count above = pre-existing guards, should be 12)
Fable
thinking
I've confirmed the twelve threading-related classes that need the QT_CONFIG(thread) guards, and now I'm putting together the comprehensive plan document.
Fable
Now the comprehensive plan.md.
Fable
⚙ Write {"file_path": "/home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/plan.md", "content": "# QtCore shiboken typesystem vs. Qt `-no-feature-thread` (wasm) — analysis & fix\n\n**Scope slug:** `qt-nothread-typesystem`\n**Goal:** Make shi…
tool result
File created successfully at: /home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/plan.md (file state is current in your context — no need to Read it back)
Fable
⚙ Bash {"command": "ls -la /home/magik6k/lcad-wasm/pyside-port/qt-nothread-typesystem/", "description": "List deliverables"}
tool result
total 24
drwxr-xr-x 1 agent agent   134 Jul  5 12:45 .
drwxr-xr-x 1 agent agent   246 Jul  5 12:44 ..
-rw-r--r-- 1 agent agent  1928 Jul  5 12:43 0001-qtcore-guard-readwritelock-nothread.patch
-rw-r--r-- 1 agent agent  1555 Jul  5 12:44 apply_guard.py
-rw-r--r-- 1 agent agent 13154 Jul  5 12:45 plan.md
Fable
thinking
All the deliverables are complete and verified, so I'm ready to format everything into the structured output.
Fable
⚙ StructuredOutput {"__unparsedToolInput": {"raw": "{\"slug\": \"qt-nothread-typesystem\", \"title\": \"Guard QtCore thread-type typesystem entries for -no-feature-thread wasm\", \"verdict\": \"PySide 6.11's QtCore typesystem is already built to bind against …
tool result
<tool_use_error>InputValidationError: StructuredOutput was called with input that could not be parsed as JSON.
You sent (first 200 of 2290 bytes): {"slug": "qt-nothread-typesystem", "title": "Guard QtCore thread-type typesystem entries for -no-feature-thread wasm", "verdict": "PySide 6.11's QtCore typesystem is already built to bind against a -n
Common causes: unescaped backslashes in file paths (use / or \\), unescaped control characters, or truncated output. Retry with valid JSON.</tool_use_er  …[truncated]
Fable
⚙ StructuredOutput {"slug": "qt-nothread-typesystem", "title": "Guard QtCore thread-type typesystem entries for -no-feature-thread wasm", "verdict": "PySide 6.11's QtCore typesystem is already built to bind against a -no-feature-thread Qt: 12 of the 14 thread…
tool result
Structured output provided successfully