pyqt: move to SIP 5.x (lxqt#465)

SIP 4.x is no longer supported [1].

And drop CMake integration for PyQt bindings - it's too messy for SIP
5.x

[1] https://www.riverbankcomputing.com/software/sip/download

.ci/build.sh

@@ -3,11 +3,12 @@ set -ex
 source shared-ci/prepare-archlinux.sh
 
 # See *depends in https://github.com/archlinuxcn/repo/blob/master/archlinuxcn/qtermwidget-git/PKGBUILD
-pacman -S --noconfirm --needed git cmake lxqt-build-tools-git qt5-tools python-sip4 sip4
+pacman -S --noconfirm --needed git cmake lxqt-build-tools-git qt5-tools python-pyqt5 pyqt-builder sip
 
-# TODO: re-enable PyQt bindings after switching to sip5
 cmake -B build -S . \
     -DBUILD_EXAMPLE=ON \
-    -DQTERMWIDGET_BUILD_PYTHON_BINDING=OFF \
     -DQTERMWIDGET_USE_UTEMPTER=ON
 make -C build
+
+cd pyqt
+CXXFLAGS="-I$PWD/../lib -I$PWD/../build/lib" LDFLAGS="-L$PWD/../build" sip-wheel --verbose

.gitignore

@@ -1,2 +1,4 @@
 build
 .kdev4
+*.pyc
+*.whl

CMakeLists.txt

@@ -20,6 +20,7 @@ option(USE_UTF8PROC "Use libutf8proc for better Unicode support. Default OFF" OF
 
 
 # just change version for releases
+# keep this in sync with the version in pyqt/pyproject.toml
 set(QTERMWIDGET_VERSION_MAJOR "1")
 set(QTERMWIDGET_VERSION_MINOR "0")
 set(QTERMWIDGET_VERSION_PATCH "0")
@@ -316,7 +317,7 @@ endif()
 
 # python binding
 if (QTERMWIDGET_BUILD_PYTHON_BINDING)
-    add_subdirectory(pyqt)
+    message(SEND_ERROR "QTERMWIDGET_BUILD_PYTHON_BINDING is no longer supported. Check README.md for how to build PyQt bindings.")
 endif()
 # end of python binding
 

README.md

@@ -33,19 +33,10 @@ Copyright: Author Adriaan de Groot <groot@kde.org>
            2008, e_k <e_k@users.sourceforge.net>
 License: LGPL-2+
 
-Files: pyqt/cmake/*
-Copyright: 2012, Luca Beltrame <lbeltrame@kde.org>
-           2012, Rolf Eike Beer <eike@sf-mail.de>
-           2007-2014, Simon Edwards <simon@simonzone.com>
-License: BSD-3-clause
-
 Files: cmake/FindUtf8Proc.cmake
 Copyright: 2009-2011, Kitware, Inc
            2009-2011, Philip Lowman <philip@yhbt.com>
 License: BSD-3-clause
-
-Files: pyqt/cmake/PythonCompile.py
-License: public-domain
 ```
 
 ## Installation
@@ -62,7 +53,7 @@ Code configuration is handled by CMake. CMake variable `CMAKE_INSTALL_PREFIX` wi
 
 To build, run `make`. To install, run `make install` which accepts variable `DESTDIR` as usual.
 
-To build PyQt bindings, specify an additional CMake option `QTERMWIDGET_BUILD_PYTHON_BINDING=ON` when building this library.
+To build PyQt bindings, build this library first, and then invoke `sip-wheel` in pyqt/ directory. Environment variables `CXXFLAGS` and `LDFLAGS` can be used to specify non-installed or non-standard directories for headers and shared libraries, and the built Python wheel can be installed by standard tools like `pip`. See [the CI script](.ci/build.sh) for a complete example.
 
 ### Binary packages